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Security sensors are essential devices that alert you of any potentially dangerous conditions in your home. If you have difficulties installing one, here are tips on how to place sensors. You can also check out the latest sensors in Hong Kong below!

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Wireless Magnetic Sensor Door Window Security Burglar Alarm w/ 3 Remote Control
HK$ 117.00
Banggood
Description: Wireless Magnetic Sensor Door Window Security Burglar Alarm w/ 3 Remote Control Features: 1. One Magnetic Sensor can match with at most 8 remote controllers freely. 2. One remote controller could control several magnetic sensors; 3. Excellent Home use product, Tiny and fashion; 4. Volume: 110Db; 5. Alarm and door bell function for your option; 6. Low energy and long work time; Specification: 1. Voltage: 3V AAA*2pcs(not included) 2. Stand-by Volume: 100μA 3. Alarm volume: 30mA 4. Frequency: 433Mhz 5. Alarm response time: 200ms 6. Stand-by time: 8-12 months 7. Specifications of Remote control 8. Voltage: 12 built in 12V27A*1pcs 9. Stand-by Volume: 1μA 10. Working volume: 15Ma 11. Stand-by time: 8-24onths 12. Remote control distance: 20m 13. Magnetic Sensor size: 8.4*4.3*1.4cm Low pressure detection: 1.When the battery is low, the LED of magnetic door will flashing once per second, prompt low, please replace the battery. 2.Remote control lights flashing dimmed or remote distance becomes shorter, please replace the battery. Package includes: 1 x Magnetic Sensor (batteries not included) 1 x Magnetic Stick 3 x remote control(built in 12V 27A* battery 1pcs) 1 x user manual Details pictures:
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−13%
Keyestudio EASY Plug Hall Magnetic Sensor Module for Arduino
HK$ 78.00 HK$ 90.00
Mini In The Box
Development Board Type:For Arduino; Module Function:Board; Sensor Function:Current; Brand:Keyestudio; Listing Date:10/11/2017; Production mode:Self-produce
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Wireless Home Security Door Window Entry Alarm Warning System Magnetic Sensor Alarm
HK$ 29.00
Tomtop
Features: * High Sensitivity. * With dual function of emergency switch magnetic door. * Low consumption chip design. * Low voltage fault monitoring reports. * 2262 IC, oscillation resistance.
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−33%
Hall Effect Magnetic Sensor Module DC 5V For (For Arduino)
HK$ 16.00 HK$ 24.00
Mini In The Box
Model:KY-003; Type:Sensor; Sensor Function:Magneto; Brand:Keyes; For:For Arduino; Listing Date:11/27/2013
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Magnetic Sensor Door Window Detector Security Home Alarm
HK$ 55.00
Tomtop
Features: *Low false trigger rate *Low-consumptiondesign,which makes it can work long time *Easily install with mounting pads *It has the function of alarm, constant alarm,closing-door hint, and doorbell *Excellentdesign,tinyandfashion
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Wireless Vibration Magnetic Sensor Remote Home House Door Window Detector Security Alarm
HK$ 102.00
Tomtop
Features: *Alarmanddoorbellfunctionforyouroption *Low-consumptiondesign,which makes it can work long time *Installation with double-side adhesive,easier to install *Remote control operation makes it easy to operate *Excellentdesign,tinyandfashion *Wireless magnetic and vibration mode, it will alarm when the sensor detects someone come in or there are some vibration of the door or window *Built-in 105dB loud alarm, can effectively frighten the thieves *It has the function of arm,disarm,emergency alarm and doorbell
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−50%
Sky FK-9806 B2 Smart Home Magnetic Sensor Alarm 2 Magnetic Sensor 1 Remote Control
HK$ 118.00 HK$ 235.00
Mini In The Box
Listing Date:01/22/2016
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Lifesmart Smart Motion Sensor Infrared Motion Detector
HK$ 129.00
Zapals
The LifeSmart™ Motion Sensor constantly keeps an eye out for any movement in your home or office.
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Wireless 2 Remote Control Home Security Alarm Warning System with Magnetic Sensor for Door Window
HK$ 102.00
Tomtop
Features: Wireless remote control to arm or disarm. Super loud alarm of 110dB, scare thief away. Powered by 2 pieces of AAA batteries(not included). Low power and state remind with LED indicator. Magnetic sensor, door and window motion detector. Can easily mount to windows or doors with included double sides adhesive tape, no tools required. Door bell function, reminding people in house open door for you.
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*Prices updated on 17 Oct 2017

How to Install Security Sensors in Hong Kong

Installing sensors isn’t a difficult task, it’s as easy as peeling a sticker and placing it on any surface. But doing so requires planning to look for the right place for each sensor, ensuring that it will work effectively as possible. Here are some installation tips on how to determine the perfect place for different types of sensors.

Carbon Monoxide Detectors

Carbon monoxide detectors in Hong Kong beep loudly if there are high levels of carbon monoxide in the air, alerting you to get everyone out of the house. It’s best to install one carbon monoxide detector on each floor of your home and place it five feet above the ground. When it comes to good locations for installing these sensors, you can place them near bedrooms and in living rooms where most people are likely sleeping or gathering. You can also place one near your garage door but avoid installing it inside the garage, close to any appliances, or in confined places like furnace rooms.

Door/window sensors

Door sensors in Hong Kong alert you once a burglar enters your home through a door or window. They send a signal to the control panel which notifies the central monitoring station. It’s best to have these sensors on every door and window, but you might also want to consider purchasing a glass break sensor or image sensor instead of multiple window sensor. If one of your doors or windows appears to be an easy spot for burglars to access, then make sure you place a sensor near it. Intruders like dark areas, so you may want to have those places monitored. Also, don’t forget to install sensors near your bedroom windows.

Fire/heat/smoke detectors

This kind of sensors detects fire, heat, and smoke. When installing these sensors, make sure they are interconnected so that they will alert in unison, making sure that everyone in the house will hear them. It’s best to have at least one fire alarm on every floor of your home, especially in places where people gather or sleep such as the bedroom. Also, install these sensors near attics and in living rooms. That way, the sensor will detect the fire sooner if it’s closer to these areas.

Flood sensors

A flood sensor works if it senses excess water in the location where it is placed. It helps warn you of any leakage from a defective appliance or broken pipe, providing an advance notice to shut the water off and save any important belongings. Not to mention, it saves you money on repairs.

When installing one, make sure to place it on the first level of your home. You may also place it inside the sump up so it will alert you before the water comes to your basement. If you don’t have a basement, you can place it near the water heater in your kitchen or laundry room.

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