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Simple Locks / Guards

Simple lock guard is an auxiliary key that can be easily attached to and removed from doors and windows for security purposes. When installed on a door, it is often used to prevent picking, and when installed on a window, it is often used for the purpose of preventing the glass from breaking. Some simple locks for windows have an alarm. Be careful not to damage the window glass, sash or door. There is also a type that can secure clearance for pets.
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  1. SD Tojimari-kun
    SEPA SD Tojimari-kun
    Sash Auxiliary Lock A large die-cast knob that is easy to turn. Attaching it to two places enhances the security effect. It can be used for intermediate tightening such as wind coolers.
    Mounting dimensions (mm)  28~45  Material  Body: Zinc die-cast, Knob: Zinc die-cast 
    Rating:
    90%
    from S$5.99
    Min. 2 days
  2. Powerful window lock jumbo
    Nomura Tec Powerful window lock jumbo
    Auxiliary lock for sash, for balcony sliding door with double safety device, sash window Installation is OK even with the window slightly open for ventilation. It is safer to install it in two places, upper and lower. Ideal for sliding doors on the balcony.
    Mounting dimensions (mm)  29~50 
    Rating:
    100%
    from S$39.99
    Min. 2 days
  3. Sash window auxiliary lock Guardman
    Guardlock Sash window auxiliary lock Guardman
    Standard sash window auxiliary lock! Wide design for firm guard. The knob is large and easy to turn. Please use it to improve the security effect of sash windows. * ・ This product is designed for indoor use. Do not use it outdoors. -In order to further enhance the crime prevention effect, it is ... Read More
    Dimensions, Width W x Length L x Height H (mm)  36×60×39 
    Rating:
    95%
    from S$19.99
    Min. 2 days
  4. Tsuika lock for metal furniture
    Guardlock Tsuika lock for metal furniture
    Attach it to the top and bottom of the sliding door to protect important documents! (Installed in two places on the top and bottom and lock it strictly) Regenerate furniture without a "key" to "with a key"! Easy to install and no tools required as it is simply attached with st... Read More
    Set Contents  Upper and lower dual use set  Number of Keys  With 2 
    from S$49.99
    Min. 2 days
  5. Madoban Mad Stopper
    VESSEL Madoban Mad Stopper
    Easy sash crime prevention, with ratchet to prevent backtracking that does not loosen due to vibration. The gear inside the knob is fixed and will not loosen even if there is vibration. Installation is as simple as tightening the knobs and no tools or adhesives are required. Ventilation is also O... Read More
    Material (Pad)  CR (neoprene rubber)  Material (Clip)  Stainless steel  Material (knob)  Zinc alloy / baked paint  Material (Main Unit)  Zinc alloy / baked paint  Material (back plate)  Zinc alloy and zinc plating 
    Rating:
    92%
    from S$21.99
    Min. 2 days
  6. Madoban GO lock
    Guardlock Madoban GO lock
    It is recommended for crime prevention and safety measures such as preventing cats and dogs (pets) from popping out and children from falling when you want to open it a little because it is well ventilated in the summer. Also for crime prevention of small windows in toilets and bathrooms. It can ... Read More
    Rating:
    100%
    from S$32.99
    Min. 2 days
  7. Doorknob Guard
    Tanabe Metal Industry Doorknob Guard
    Simply cover the doorknob with the cup and lock the padlock to guard against picking. The cup uses 2.5 mm thick stainless steel with excellent durability to guard against destruction. Comes with a digital padlock that allows you to freely set your PIN.
    Material  Outside: SUS304 / Inside: PVC 
    Rating:
    100%
    from S$63.99
    Min. 2 days
  8. Add-on lock for iron lockers
    Guardlock Add-on lock for iron lockers
    Many lockers have lost their keys after long-term use, and there are cases where it is difficult to purchase keys due to the discontinuation of the manufacturer. The introduction of a retrofit locker lock [with a rotating lock and cylinder] will extend the service life of the locker and is also e... Read More
    Rating:
    20%
    from S$66.99
    Min. 2 days
  9. Lock for sash window PB One Touch Simplicity GB
    WAKI Lock for sash window PB One Touch Simplicity GB
    Just peel off the sticker (backing paper) and stick it. Locking and unlocking can be done with one touch. For crime prevention measures, for indoor ventilation * When using for ventilation, please use at intervals of 8 cm or less. * When closing the door after ventilation, return it to the closed... Read More
    Material  Stainless steel SUS304 (baked paint)  Color  German bronze 
    Rating:
    100%
    from S$11.99
    Min. 2 days
  10. Auxiliary Lock for Aluminum Sash Window Tojimari-kun
    HINAKA Auxiliary Lock for Aluminum Sash Window Tojimari-kun
    Attach it to the window frame to enhance the security effect.
    Color  Amber  Material  Zinc die casting 
    from S$14.99
    Min. 2 days
  11. Auxiliary lock for sash window Guardman V
    Guardlock Auxiliary lock for sash window Guardman V
    A standard auxiliary lock for sash windows! With a stopper, it does not loosen even with vibrations such as wind fans, so you can rest assured. Wide design for firm guard! Large knobs for easy turning! Easy to install! Please use it to improve the security effect of sash windows. * ・ In order to... Read More
    Dimensions, Width W x Length L x Height H (mm)  40×60.5×40.5  Color  Bronze 
    from S$13.99
    Min. 2 days
  12. Hinaka S / S Ventilated door
    HINAKA Hinaka S / S Ventilated door
    A crescent bracket for sashes that can be closed by natural ventilation. All you have to do is tighten it with a coin (driver) and fix it to the bracket.
    Mass (g)  65  Material  Zinc sheet 
    Rating:
    70%
    from S$5.39
    Min. 2 days
  13. Property management lock With 4-stage number lock For general doors
    Guardlock Property management lock With 4-stage number lock For general doors
    Ideal for property management in the real estate industry. Easy to install, complete in 1 minute! Installation and removal can be done without tools. Since a plate is inserted between the padlock and the door, the door will not be damaged even if the padlock shakes. In addition, the back of the p... Read More
    Plate Dimensions (mm)  105×38×9 
    from S$49.99
    Min. 2 days
  14. Wind rock
    Nomura Tec Wind rock
    Sash auxiliary lock It has become a strong anti-slip to enhance the crime prevention effect. It is more secure if you attach it to the upper frame and the lower frame in two places. It can be used for intermediate tightening such as wind coolers.
    Mounting dimensions (mm)  30~45 
    from S$21.99
    Min. 2 days
  15. Hinaka S / S Madomori-kun Window Lock
    HINAKA Hinaka S / S Madomori-kun Window Lock
    An auxiliary lock that prevents fraud and unlocking of the crescent due to broken glass. It can also be used for large crescents.
    Mass (g)  285  Material  Body Zinc die-cast Lock bar Steel plate 
    from S$35.99
    Min. 2 days
  16. Lock for sash window PB One-touch Simplicity SV
    WAKI Lock for sash window PB One-touch Simplicity SV
    Just peel off the sticker (backing paper) and stick it. Locking and unlocking can be done with one touch. For crime prevention measures, for indoor ventilation * When using for ventilation, please use at intervals of 8 cm or less. * When closing the door after ventilation, return it to the closed... Read More
    Material  Stainless steel SUS304 (baked paint)  Color  Silver 
    Rating:
    100%
    from S$13.99
    Min. 3 days
  17. Window lock set Auxiliary lock for sash
    TMC Window lock set Auxiliary lock for sash
    The terrace sash has a wide opening. For auxiliary locks for high sashes. Made of light and durable aluminum alloy Auxiliary lock for sash
    Mounting dimensions (mm)  (Gap) 27-42  Mass (g)  215  Dimensions (H x W x D) (mm)  39×45×54.5  Material  Made of aluminum alloy 
    from S$13.99
    Min. 2 days
  18. Auxiliary lock for sash window Guardman V
    Guardlock Auxiliary lock for sash window Guardman V
    A standard auxiliary lock for sash windows. With a stopper, it does not loosen even with vibrations such as wind fans, so you can rest assured. Wide design for firm guard! Large knobs for easy turning! Easy to install. Please use it to improve the security effect of sash windows.
    Dimensions, Width W x Length L x Height H (mm)  40×60.5×40.5  Color  Silver 
    Rating:
    40%
    from S$13.99
    Min. 2 days
  19. Window / Boom Crime Lock (same key)
    Guardlock Window / Boom Crime Lock (same key)
    With a full-scale cylinder key. For crime prevention of windows where thieves often invade. It can be locked with the window slightly open, which is convenient for ventilation. The keyhole has a shutter to shut out dust. It takes 1 minute to attach with strong tape. It can be used not only for wi... Read More
    Movable range (mm)  0~70  Main Unit Dimensions (mm)  30.6×120 
    from S$29.99
    Min. 5 days
  20. Cat security window lock
    SMILE KIDS Cat security window lock
    The knob has a strap hole that can be hung.
    Mounting dimensions (mm)  30~43  Dimension (mm)  38×75×88  Mass (g)  50 
    from S$8.19
    Min. 2 days
  21. Madoka Rock'n Double Rail
    Guardlock Madoka Rock'n Double Rail
    It can be locked just by turning the knob. For crime prevention of windows where thieves often invade. It can be locked with the window slightly open, which is convenient for ventilation. With 2 rails. Can be used in combination. Slide adjustment width 180 mm. It is wide enough for cats and small... Read More
    Dimension (mm)  30.6 x 225 (when connected) 
    from S$26.99
    Min. 5 days
  22. Window / Boar Crime Lock
    Guardlock Window / Boar Crime Lock
    With a full-scale cylinder lock. For crime prevention of windows where many thieves invade. It can be locked with the window slightly open, which is convenient for ventilation. The keyhole has a shutter to shut out dust. With a hook hole that can be hung when not in use. The rail can be used for ... Read More
    Dimension (mm)  30.6×120 
    from S$26.99
    Min. 2 days
  23. Window / Bo Crime Lock 1.5L
    Guardlock Window / Bo Crime Lock 1.5L
    With a full-scale cylinder lock. For crime prevention of windows where many thieves invade. It can be locked with the window slightly open, which is convenient for ventilation. It can be installed from a gap of 1.5 mm between the doors. The keyhole has a shutter to shut out dust. With a hook hole... Read More
    Dimension (mm)  61.2×120 
    from S$34.99
    Min. 5 days
  24. Bow Crime Plate Universal Type
    Guardlock Bow Crime Plate Universal Type
    Installation is OK regardless of the door thickness and lock model. A versatile type that can be used with most doors. Outstanding strength and powerful crime prevention! Fashionable design suitable for the entrance. Security plate for open door
    Dimension (mm)  45×45×272 
    from S$109.90
    Min. 5 days
  25. Sash upper frame dedicated auxiliary lock Mamolex NEW top
    Guardlock Sash upper frame dedicated auxiliary lock Mamolex NEW top
    When you tighten the knob, the stopper will automatically engage and you will not have to worry about loosening. To unlock it, you have to pull the hook with one hand and turn the knob with the other hand, which makes it difficult to invade from the outside. Auxiliary lock for sash window * The c... Read More
    Dimension (mm)  69.1×66×35.3 
    from S$21.99
    Min. 5 days
  26. Window / Bo Crime Double Rail
    Guardlock Window / Bo Crime Double Rail
    With a full-scale cylinder lock. For crime prevention of windows where many thieves invade. It can be locked with the window slightly open, which is convenient for ventilation. The keyhole has a shutter to shut out dust. With 2 rails. It can be used by connecting two rails. Slide width 180 mm. It... Read More
    from S$44.99
    Min. 5 days
  27. Replacement door guard for exterior doors
    Guardlock Replacement door guard for exterior doors
    With automatic adjustment seat! The seat moves up and down 16 mm and is stopped at the optimum position by the magnet. The seat can be removed by loosening the screw. This is convenient when you are worried about protrusions such as putting in and out furniture. Compatible with most doors! Easy r... Read More
    Dimension (mm)  67×23.9×112 
    from S$47.99
    Min. 5 days
  28. Don't go out alone
    Guardlock Don't go out alone
    Prevents going out (wandering) without knowing it. Lock inside the door! No tools required, easy installation! Just tighten the metal fittings on the door! Prevents accidents when your family goes out while sleeping. Preventing small children from going out to prevent wandering in households with... Read More
    Door-to-door clearance dimension (mm)  3~4  Door thickness (mm)  23~40 
    from S$109.90
    Min. 5 days
  29. Sash Auxiliary Mamorex Super Big
    Guardlock Sash Auxiliary Mamorex Super Big
    When you tighten the knob, the stopper will automatically engage and you will not have to worry about loosening. To unlock it, you have to pull the hook with one hand and turn the knob with the other hand, which makes it difficult to invade from the outside. Auxiliary lock for sash window * Pleas... Read More
    Dimension (mm)  51×95.5×58 
    from S$32.99
    Min. 5 days
  30. Auxiliary lock for sash window Guardman V Super Bic
    Guardlock Auxiliary lock for sash window Guardman V Super Bic
    A standard auxiliary lock for sash windows. With a stopper, it does not loosen even with vibrations such as wind fans, so you can rest assured. Wide design for firm guard! Large knobs for easy turning! Easy to install. Please use it to improve the security effect of sash windows.
    Dimensions, Width W x Length L x Height H (mm)  83×50×49  Color  Silver 
    from S$21.99
    Min. 5 days
  31. Auxiliary lock for sash window
    Guardlock Auxiliary lock for sash window
    Since the lock cannot be unlocked without using both hands, it is difficult to invade from the outside. With automatic locking device! To lock, just turn the knob. It locks automatically * Many other companies' products loosen due to vibration. The knob is large and easy to turn! It tightens ... Read More
    Dimensions, Width W x Length L x Height H (mm)  38.2×67.5×42.7 
    Rating:
    100%
    from S$15.99
    Min. 7 days
  32. Wind Rock Monta
    Nomura Tec Wind Rock Monta
    Auxiliary lock for sash With double safety device for upper frame Installation is OK even with the window slightly open for ventilation. It is more secure if you install it in two places on the left and right. It is difficult for an intruder to remove the sash from the outside.
    Mounting dimensions (mm)  6~19 
    from S$22.99
    Min. 3 days
  33. Door guard for inside door
    Guardlock Door guard for inside door
    With automatic adjustment seat! The seat moves up and down 16 mm and is stopped at the optimum position by the magnet. Compatible with most doors! Easy replacement (with temporary seating seal), barrier-free Safe in case of emergency! Even if the entrance door is deformed due to an earthquake dur... Read More
    from S$37.99
    Min. 5 days
  34. Benry Rockman with Key 2
    Benry Benry Rockman with Key 2
    The definitive version of auxiliary locks for windows! Can be attached to either the upper or lower frame. It can also be used to lock half-swing doors when installing a ventilation fan or window air conditioner. * Insert it between the outer window frame and the sash, or between the water return... Read More
    Mounting dimensions (mm)  27~43  Dimensions (Width W x Height H) (mm)  36×55 
    from S$6.59
    Min. 4 days
  35. Auxiliary lock for sash window Guardman V Super Big
    Guardlock Auxiliary lock for sash window Guardman V Super Big
    A standard auxiliary lock for sash windows! With a stopper, it does not loosen even with vibrations such as wind fans, so you can rest assured. Wide design for firm guard! Large knobs for easy turning! Easy to install! Please use it to improve the security effect of sash windows. * ・ Do not use ... Read More
    Dimensions, Width W x Length L x Height H (mm)  83×50×49  Color  Bronze 
    from S$21.99
    Min. 2 days
  36. Property management lock Long / general door use
    Guardlock Property management lock Long / general door use
    Ideal for property management in the real estate industry. You can use a commercially available padlock. (Shackle diameter up to 10 mm is possible) Easy to install, complete in 1 minute! Installation and removal can be done without tools. Since a plate is inserted between the padlock and the door... Read More
    Plate Dimensions (mm)  105×38×9  Dimension (mm)  Mounting bracket: 250 × 40 × 27 
    from S$69.99
    Min. 2 days
  37. Madoka Rock'n L
    Guardlock Madoka Rock'n L
    It can be locked just by turning the knob. For crime prevention of windows where thieves often invade. It can be locked with the window slightly open, which is convenient for ventilation. The rail can be used for both left and right, so there is no need to worry about making a mistake in mounting... Read More
    Dimension (mm)  30.6×120 
    from S$21.99
    Min. 5 days
  38. Madoka Rock'n S
    Guardlock Madoka Rock'n S
    It can be locked just by turning the knob. For crime prevention of windows where thieves often invade. It can be locked with the window slightly open, which is convenient for ventilation. Screw type. It can be easily installed with a screwdriver. Slide adjustment width 25 mm Auxiliary lock for sa... Read More
    Dimension (mm)  61.2×55 
    Rating:
    80%
    from S$15.99
    Min. 5 days
  39. Window lock set
    Beruf SECURITY Window lock set
    Prevent intrusion from windows and terraces! Auxiliary lock for sash With a wide opening, it can also be used for terrace sashes and high sashes.
    Mounting dimensions (mm)  26~45 
    from S$19.99
    Min. 4 days
  40. Property management lock Dial type For general doors
    Guardlock Property management lock Dial type For general doors
    Lock body dial type. You can set it to your favorite number. There are 10000 different numbers. The dial stops at "0" and you can check the number by touch, so you can use it even in the dark. Since the lock body has a rubber magnet, it can be attached to the indoor door during storage.... Read More
    from S$57.99
    Min. 5 days
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