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
KERUI G20 WIFI + GSM Home Alarm System Tuya Smart Wireless Burglar Alarm Home Security System Door Window Sensor Motion Sensor
Aliexpress UK
One Set Of Tuya Alarm Host A External wired alarm connectors: 1 channel external wireless siren, 1 channel. Siren output：<500mA. Support the alarm such as battery problem, low power battery anti-pry alarm etc.
eBay
KERUI W181 Wireless Home Alarm 2G WIFI GSM Alarm Security System Tuya Smart Burglar Alarm for House Protection Motion Sensor
Aliexpress UK
4G/5G GSM Alarm Dialler. There is a right way and a wrong way to make a critical alarm dialler Why choose this dialler?. 1× GSM Alarm Dialler (choose CQ5 or DR5 ). Intruder & fire alarm notifications.
eBay
KERUI Wireless Burglar Alarm System Home Alarm Tuya Smart WiFi GSM SMS Alarm For House With Motion Detector Door Sensor Alexa
Aliexpress UK
Wireless Home Alarm System, GSM SMS Complete Burglar Alarm System with 120dB Alarm Siren, Intelligent Remote Control, LCD Display, Voice Invite, Security for Home, Office
eBay
KERUI W181 Alarm System Secutrity Home WIFI GSM Alarm Tuya Smart Motion Detector Door Sensor Burglar IP Camera Work Alexa Google
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
KERUI W184 4G WIFI GSM Alarm System Unit Wireless Home Tuya Smart APP Control Motion Sensor Burglar Support Alexa Motion Sensor
Aliexpress UK
Remote SMS settings. 11 National languages : Chinese, English, German, Russian, Spain, Poland, Italy, French, Portugal, Greece, Romanian.
eBay
2G 3G GSM Alarm System Wireless Alert Module For power failure alert Wireless Home Security System Alarms Security System
Aliexpress UK
One Set Of Tuya Alarm Host A External wired alarm connectors: 1 channel external wireless siren, 1 channel. Siren output：<500mA. Support low power for wireless parts, Tamper alarm function. Support the alarm such as battery problem, low power battery anti-pry alarm etc.
eBay
KERUI Wireless 433MHz D025 Window Door Sensor Magnet Detector For W181 W184 W204 Home Security Alarm System Burglar An-theft
Aliexpress UK
1 x Wired Siren. Working With WIFI / SIM Card, NO Monitoring Fee. Wireless Transmission Frequency for All Our Wireless Alarm Systems is 433MH. Alarm Standard Kit 1 x Wireless Wide-Angle Anti-Tamper PIR Motion Sensor.
eBay
KERUI W204 4G Home Alarm System New Black Alarm Panel Wireless Motion Sensor Tuya Smart WiFi GSM for Home Security Motion Sensor
Aliexpress UK