Built in PIR motion sensor. The motion detector power by 4 AA batteries (not included). When the alarm is triggered,it will sound for 20 seconds. Loud 120 db alarm. 110 degree wide angle.
eBay
Wireless PIR Motion Sensor Detector Alarm with Remote Controls Infrared Motion Sensor Alarm Battery-powered Home Security System
Aliexpress UK
Build-in siren, v ery loud alarm up to 120dB. 1 x PIR motion sensor (battery - not included). Alarm sound: 120dB. No wifi network is needed. Detection Angle:110 degree. 1 x User Manual. Plug and play, easy to install.
eBay
Wireless Motion Sensor Alarm with 2 Remote Controls PIR Motion Sensor Detector Alarm Battery-powered Home Security System
Aliexpress UK
Alarm sound:≤ 120dB (within 10cm). IP65 ultra-high waterproof grade ensures that the motion detector is not attacked by rain. Solar Security Sounds Lights Doors Windows Motion Sensor Alarm Infrared Detector.
eBay
Wireless Motion Sensor Alarm with 2 Remote Controls PIR Motion Sensor Detector Alarm Battery-powered Home Security System
Aliexpress UK
Alarm sound:≤ 120dB (within 10cm). IP65 ultra-high waterproof grade ensures that the motion detector is not attacked by rain. Solar Security Sounds Lights Doors Windows Motion Sensor Alarm Infrared Detector.
eBay
WiFi Home Alarm System GSM Tuya Smart Home Security Alarm Kit with Siren PIR Motion Sensor Remote Controls Window Door Sensor
Aliexpress UK
Built in PIR motion sensor. The motion detector power by 4 AA batteries (not included). When the alarm is triggered,it will sound for 20 seconds. Loud 120 db alarm. 110 degree wide angle.
eBay
PGST 105 4G Wireless Home Alarms System,Wireless WiFi Home Security System with Door & Motion Sensor App control work with ALexa
Aliexpress UK
【Wireless Motion Sensor Alarm】-- No wires needed, motion detectors is a complete, self contained alarm system, smart motion sensor. Motion sensor alarm will emit the. Alarm mode. Anti-theft Alarm, it can emit 100dB "WIWU" sound about 20 second.
eBay
KERUI G12 Wireless Tuya Home Alarm System Kit WiFi GSM Home Security System with Door and Motion Sensor Smart Life App Control
Aliexpress UK
Alarm sound:≤ 120dB (within 10cm). IP65 ultra-high waterproof grade ensures that the motion detector is not attacked by rain. Solar Security Sounds Lights Doors Windows Motion Sensor Alarm Infrared Detector.
eBay
Wireless PIR Motion Sensor Detector Alarm With 2 Remote Control Power Adapter For Home Shed Garage Caravan Alarm Security System
Aliexpress UK
Build-in siren, v ery loud alarm up to 120dB. 1x PIR motion sensor (battery - not included). Alarm sound: 120dB. No wifi network is needed. Detection Angle:110 degree. 1x User Manual. Plug and play, easy to install.
eBay
Wifi GSM Alarm System Home Wireless Security Burglar Alarm Kit Door Open Motion Sensor Smart Life Tuya App Control Suit Alexa
Aliexpress UK