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
ANNKE 8CH 4K IP Camera Security System 265+ 8MP Poe Camera Two Way Audio Video Surveillance CCTV 4MM Lens Support 256G Card IP67
Aliexpress UK
How does this siren alarm system protect your house?. 2, When the door sensors, PIR motion sensor, Curtain detectors or other sensors be triggered, this siren will sound to deter thieves. A: No, this siren work as an alarm system, it can work with wireless sensors to protect your house.
eBay
SANNCE 16CH 5-in-1 1080N Surveillance DVR H.265+ Home Security Video Recorder For 720P 1080P Cameras IP Cameras CCTV System DVR
Aliexpress UK
Wireless Wide-Angle Anti-Tamper PIR Motion Detector. GSM 850/900/1800/1900MHz. 1 x Wireless Weatherproof External Outdoor Flash Alarm. 7 x Wireless Wide-Angle Anti-Tamper PIR Motion Sensor with 20 pcs nuts and nuts covers.
eBay
ANNKE 4K Ultra HD POE Video Surveillance System 8CH NVR Recorder With 8MP Security Cameras CCTV Kit Audio Recording 4K Ip camera
Aliexpress UK
KERUI P815 Motion Sensor. KERUI D022 Door Sensor.
eBay
ANNKE WS300 WiFi Video Surveillance System 5MP NVR 3MP IP Cameras Audio Recording Security Cameras AI Detection CCTV Cameras Kit
Aliexpress UK
1 Wireless PIR Motion Detector with 9V Battery. The host supports up to 30pcs wireless detectors, 8pcs remote key fobs, 4 doorbell buttons. Alarm sound: up to 115 dB.
eBay
ANNKE 3K Ultra HD POE Video Surveillance System 8CH NVR Recorder With 3K Security Cameras CCTV Kit Built-in Mic 3K Ip camera
Aliexpress UK
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
ANNKE 4K Ultra HD POE Video Surveillance System 8CH NVR Recorder With 8MP Security Cameras CCTV Kit Audio Recording 4K Ip camera
Aliexpress UK
Human Voice, Displaying, SMS, and push notification will be in the selected language. When the security panel is only in the "Away" state, the panel will alarm after the sensor is triggered. 2 Kinds of Connection: 4G/GSM-2G and WIFI.
eBay
ANNKE 4K POE Video Surveillance System 8CH NVR With 8MP/12MP Security Cameras CCTV Kit Audio Recording Ip camera Two-way Audio
Aliexpress UK
Brand new intelligent security Alarm system. Support mama100 sensor.built in battery for all system.never used or opned.delivery within a days.
eBay
ANNKE 4K POE Video Surveillance System 8CH NVR With 8MP 12MP Security Cameras CCTV Kit Audio Recording Ip camera Two-way Audio
Aliexpress UK