1 x Motion Sensor (Uses 3 AAA, Not Included). Each device can be battery operated, and have usb plugs on all 3 to be hard wired. 1 x Motion Sensor Mounting Kit. 2 x Motion Sensor (Uses 3 AAA, Not Included).
eBay
Ewelink Zigbee Door Sensor Wireless Magnetic Window Open Closed Alarm Detector Works With Zigbee2MQTT Alexa Google Need Gateway
Aliexpress UK
Fully expandable system, up to 32 HTZSAFE sensors can be added to the 1 receiver; and 1 sensor can be added to unlimited receivers. (Restart the receivers or sensors will not miss the records). SOLAR WIRELESS ALARMS : Solar powered, no wiring no need replace battery.
eBay
KERUI Wireless 433MHz D025 Window Door Sensor Magnet Detector For W181 W184 W204 Home Security Alarm System Burglar An-theft
Aliexpress UK
The motion detector power by 1 9V batteries (not included). Loud: 110 Db alarm. 2pcs x Alarm Sensor. When the alarm is triggered,it will sound for 20 seconds. Other accessories demo in the picture is not included.
eBay
Wireless Carp Fishing Alarm Set 1+4 Waterproof Fishing Alarm Indicator SQ-4 Bite Indicator
Aliexpress UK
1) 17-chord music chip and 40mm loud speaker for pleasant and louder alerts Remote transmission range up to 280m/ 918ft in open space. 2) 4 independent LEDs to distinguish sensing zones, with the option to synchronize sound alerts 3) 5 stages adjustable volume from 113 ~ 25dB. 4) Infrared + microwave radar composite dual detection for lower false alarm rates 5)Added silent and vibration reminder.More privacy,no disturbance ,vibration reminder for discreet alerts 6)Expandable.The receiver can learn from up to 32 wireless sensors like PIR motion, magnetic or vibration sensor as well as up to 8 remote controllers. 7) Low battery indication. Both the sensor and receiver can be powered by battery or plugged into a USB interface. 8) IP66 Waterproof ideal for outdoor use.
eBay
Carp Fishing Alarm Set Wireless Fishing Bite Alarm Indicator HRS1
Aliexpress UK
LONG RANGE: Our driveway alarm easily detects motion within 30 feet, making it a valuable asset for enhanced safety. You can conveniently place it up to 800m away from the receiver, providing unrivaled flexibility.
eBay
Door and Window Alarm Security Wireless Home Window Door Anti-theft Security Alarm System Magnetic Sensor
Aliexpress UK
HTZSAFE Solar Wireless Alarms Fully expandable system, up to 4 HTZSAFE sensors can be added to the receiver and 1 sensor can be added to unlimited receivers. Restart the receivers or sensors will not miss the records.
eBay
Carp Fishing Alarm Set Waterproof Wireless Fishing Bite Alarm Fishing Accessories Fishing Bite Indicator S6
Aliexpress UK
KERUI M525 Wireless 500ft Long Range Door/Window Open Alarm Doorbell Alarm with 1 M525 Receiver+ 2 D022 Door Sensor. 500 feet far enough to cover every door and window in your house. Each wireless doorbell receiver can pair up to 20 magnetic door alarm sensors and each sensor can add unlimited receivers.
eBay
Baseus Wireless Smart Tracker Anti-lost Alarm Tracker Key Finder Child Bag Wallet Finder APP GPS Record Anti Lost Alarm Tag
Aliexpress UK
1) 17-chord music chip and 40mm loud speaker for pleasant and louder alerts Remote transmission range up to 280m/ 918ft in open space. 2) 4 independent LEDs to distinguish sensing zones, with the option to synchronize sound alerts 3) 5 stages adjustable volume from 113 ~ 25dB. 4) Infrared + microwave radar composite dual detection for lower false alarm rates 5)Added silent and vibration reminder.More privacy,no disturbance ,vibration reminder for discreet alerts 6)Expandable.The receiver can learn from up to 32 wireless sensors like PIR motion, magnetic or vibration sensor as well as up to 8 remote controllers. 7) Low battery indication. Both the sensor and receiver can be powered by battery or plugged into a USB interface. 8) IP66 Waterproof ideal for outdoor use.
eBay
Hirisi Wireless Carp Fishing Alarm Set Waterproof Bite Alarm Indicator Carp Fishing Tackle 1+4 Set SX1
Aliexpress UK