External wired alarm connectors: 1 channel external wireless siren, 1 channel. Siren output：<500mA. GSM system：850/900/1800/1900MHz. Support the alarm such as battery problem, low power battery anti-pry alarm etc.
eBay
IMOU Home Wifi Alarm System Zigbee 3.0 Real Time App Push Motion Sensor Alarm Siren Window Door Sensor IP Camera Work with Alexa
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
2pcs Door Stop Alarm with 120dB Siren Portable Door Stopper Security Alarm for Home Hotel 3 Levels Sensitivity Door Wedge Alarm
Aliexpress UK
Tuya Wifi GSM alarm system. Color Screen Display. Support GSM SIM Card and 2.4G Wifi Network. Support Temperature and Humidity Display. Support TFT Touch Keyboard and Fingerprint Arming. Support 100 Wireless Detector and 4 Wired Detector.
eBay
Camluxy Tuya WiFi Window Alarm Glass Break Sensor Alarm 130dB Anti-Theft Vibration Detector Alarm for Home Door Window Security
Aliexpress UK
1 x Siren Alarm Horn. - Press the "S" button on the remote to trigger the panic alarm. 1 x Wireless Motion Detector. 2 x Wireless Motion Detector. - PIR Sensor - Test: Sounds a "Didi-Didi" test beep from the siren.
eBay
Ewelink Zigbee 3.0 Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Hub Z2M
Aliexpress UK
【Network Support of Wireless Alarm System】 The central panel has a built-in GSM module. When the alarm sounds, the central panel makes a call and sends an SMS to the previously set phone number. 【Alarm compatible with Google, Alexa and Tuya】.
eBay
Ewelink Zigbee3.0 Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
Aliexpress UK
WIFI Tuya APP. It support IOS and Android APP. Siren output <500mA. if alarm occurs, the alarm host will dial preset number and play the record voice. WIFI Standard IEEE 802.11b/g/n Wireless Standard.
eBay
Ewelink Zigbee3.0 Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
Aliexpress UK
【Perfect alarm design】The alarm has a design of power light, signal reception window, LED indicator, PIR sensor, Alarm Hom, etc. 【Remote control】The remote control has designs of LED indicator, Signal Emission window, and alarm/disalarm key. 【House guard】The alarm can prevent thieves, or other strangers entering your house and be your personal guard. 【Loud alarming】The device will be alarming with loud noises to ensure your safety. 【Wide application】The alarm can be used at home, garage, caravan, etc. .
eBay
433Mhz Indoor Wireless Siren Alarm For Smart Security Alarm System PG103, PG105, PG107, PG108
Aliexpress UK
1 x Siren Alarm Horn. - Press the "S" button on the remote to trigger the panic alarm. 2 x Wireless Motion Detector. 1 x Wireless Motion Detector. - Test: Sounds a "Didi-Didi" test beep from the siren.
eBay
Ewelink Zigbee3.0 Water Sensor Alarm Water Leak Detector Flood Alert Overflow Security Alarm System Works With Zigbee Gateway
Aliexpress UK