OWSOO Wireless Security Alarms 433MHz Wireless Wifi Alarm Security System Water Door Sensor LCD Display Wired Siren & Wi

*It has doorbell function; Users can make calls by using digital touch keypad
*Timing arm and disarm; English, German, Chinese three languages optional.
*Smart Wifi alarm system with APP, remote operation and settings by APP. Multiple types of arm: remote control arm, out arm, home arm, timed arm.
*Support up to 100 wireless defense zones for remote control or RFID cards or wireless detectors.
*Coercion password, secretly make calls in emergency.