eBay
Ewelink ZigBee Door Window Sensor Contact Sensor Security Burglar Alarm Magnetic Door Sensor Support Home Assistant Zigbee2mqtt
Aliexpress UK
Open the door and see if the siren sounds. 1/2/4/10X Alarm Kit (alarm unit & magnetic sensor). Sensor type: alarm. Alarm type: sound. Fix the host to the door / window with double-sided tape. (Battery is not included).
eBay
KERUI 433mhz Wireless Door Sensor Home Alarm Security Window Sensor Detector for W181 W184 W202 W204 WIFI GSM Alarm Systems
Aliexpress UK
ELPINE Wireless Window Door Burglar Security Alarm. 100 DB Instant Alarm. Easily mounted by adhesive tape to window or door.
eBay
New Tuya Smart WiFi Window Door Vibration Alarm Sensor 130dB Glass Break Vibration Burglar Sensor Home Safety Alarm Detector
Aliexpress UK
WiFi version supports 2.4GHz WiFi only (No hub required). WiFi version does not support light automation, while Zigbee version supports smart automation.
eBay
Door Window Wireless Burglar Alarm with Magnetic Sensor Alarm 108dB High Volume Door Open Detectors Home Security Device
Aliexpress UK
Alexa,Tuya,Google Assistant. App: Smart Life / Tuya Smart. WiFi Version only supports WiFi 2.4GHz. No Hub Required. WiFi 2.4GHz. Works with Alexa and Google Assistant. 6000 trigger. The WiFi version of the Door sensor is not suitable for linking lights on.
eBay
EARYKONG 10 PCS door open sensor door detector reed switch wireless 433MHz for house security wifi gsm home alarm garage alarm
Aliexpress UK
These work on the basis of a reed switch. The reed switch is closed when the magnet is present (i.e. the door is closed). 1 X Flush Magnet. Check availability with our specialists. They are ideal for protecting access to interior doors, windows and even patio doors.
eBay
Hollarm Refrigerator Delay Alarm Door And Window Alarm Doorbell Anti-theft Magnetic Sensors Security System for Kid Care
Aliexpress UK
It prevents your children from sneaking out the door or intruders from entering. 【Four alarm modes】 There are 4 different alarm modes: 1. open door alarm mode. anti-theft mode for valuables. 4 SOS mode.
eBay
Door and Window Alarm Security Wireless Home Window Door Anti-theft Security Alarm System Magnetic Sensor
Aliexpress UK
1 Wireless PIR Motion Detector with 9V Battery. The host supports up to 30pcs wireless detectors, 8pcs remote key fobs, 4 doorbell buttons. 2 Wireless Remote Key Fobs with 23A 12V Battery.
eBay
Door and Window Alarm Security Wireless Home Window Door Anti-theft Security Alarm System Magnetic Sensor
Aliexpress UK