Transmit Freqency: 433MHz. This rolling door sensor can not work alone. It works with most alarm system in the market. Check if your alarm system support 433mhz. When the roller shutter/rolling door is opened from the closed position, LED will turn on red light for 5 seconds; the sensor will be triggered and will send alarming signal to the main unit.
eBay
Elecpow Door Window Alarm Home Security Wireless Burglar Alarm Door Magnetic Sensor 120dB Anti-theft Alarm For Home Kids Safety
Aliexpress UK
Our Vibration Alarm Sensor is the perfect solution for reinforcing the security of your window and door. This alarm sensor provides reliable protection, ensuring the safety of your home and loved ones.SpecificationMaterial: ABSSound Intensity: 125dBPower Source: LR44*3 (included)Dimension: 64mm x 51mm x 9mm/ 2.52" x 2" x 0.35" (L*W*H)Packing List: 3 x Door Window AlarmAdvantageWith a powerful 130dB sound output, this vibration alarm sensor immediately detects any vibrations or attempts to tamper with window or door. The loud sound serves as an effective deterrent and draws attention to the situation.InstructionUsing this alarm sensor is easy. Simply turn on the toggle switch, and after a 5-second LED flashing indication, the alarm enters the working sensing state.
eBay
130DB Door Window Entry alarm Wireless Remote Control Door Sensor Alarm Host Burglar Security Alarm System Home Protection Kit
Aliexpress UK
(4) Open the door and see if the siren sounds. 1or 5or 10Pcs x Set of Alarm Unit(1 Alarm + 1 Sensor). Sensor Type: Sound Alarm. Alarm Unit: 4.5X1.5X1.5CM. (1) Fix the host to the door / window with double-sided tape.
eBay
HOT Wireless Door Alarm With Remote Control Anti-Theft Door And Window Security Alarms Home Security Sensor Burglar Alarms
Aliexpress UK
DUAL MODE SELECTION: Switch and alarm mode integrated key, push up is the doorbell, push down is the alarm sound, when not in use, the switch key resets. STRONG DETERRENT: Built-in high-loudness alarm horn, the decibel reaches 120db, making a harsh sound, powerfully deterring thieves.
eBay
Safety Wireless Door Alarm for Home Security Personal Security Window Alarms Sensor Burglar Door Alarm for Pool, Cars, Sheds
Aliexpress UK
Work as an anti-theft alarm system, alarm siren up to 120dB. Simply hang the alarm in the door handle / button. Easy to use and install, no wiring required (requires DC 6F22 9V batteries, not included); Simply hang the alarm on the inside of your door handle.
eBay
PGST WiFi 4G Tuya Smart Life Home Alarm Security System Kit Alexa Home Automation Alarm Security Protection Door Motion Sensor
Aliexpress UK
LOW BATTERY CONSUMPTION - The alarm system's low battery consumption ensures a long life for the alarm. 90 DECIBLE - The security alarm is super powerful because it has a range of 90 decibels. So you can hear the alarm everywhere.
eBay
MOES Tuya ZigBee Smart Window Door Gate Sensor Detector Smart Home Security Alarm System Smart Life Tuya App Remote Control
Aliexpress UK
Motion sensor alarm: receiver host: 2 aa battery (not included). Security alarm: classic songs can be chosen - classic and great music. Wireless Installation for Effortless Setup: Experience a hassle-free installation process with no wiring needed.
eBay
Zigbee Door Window Sensor Open Close Detector Smart Home Security Alarm Burglar Door Sensor Works With Alexa Home Assistant Z2M
Aliexpress UK
Test: Sounds a "Didi-Didi" test beep from the siren. - Triggers siren instantly when separated by over 1mm from the magnetic strip. A: No, this siren work as an alarm system, it can work with wireless sensors to protect your house.
eBay
YUPA Wireless Magnetic Sensor Window Door Sensor for All RF 433MHz Home Alarm Security Smart Gap Sensor to Detect Open Door TUYA
Aliexpress UK