WIFI MOTION SENSOR: Wifi PIR motion sensor alarm, no hub required, via Tuya Smart or Smart Life APP to control. The enhanced sensitive infrared sensor detects movement and emits an audible alarm (up to 110dB). At the same time, an alert will be pushed to your phone. PIR MOTION DETECTOR WITH 4 ARMING MODES AND FREE ALARM RECORDINGS: You'll love the flexibility in alarm modes (Sound and Light Mode Light Only Mode Sound Only Mode Mute Mode - alerts only sent to your cell phone). Add schedule according to your needs, TIMED ARM and DISARM and view alarm records via Tuya APP anytime and anywhere. The alarm can protect your property well and is your first home security system. DUAL INFRARED DETECTION AND ACCURATE ALARM: Our Tuya motion sensor consists of upper and lower detection windows, 110detection angle, 40ft detection distance, support 360 degree to adjust the direction of detection. Due to the double infrared design, it can prevent people from climbing on the induction blind area without triggering the alarm, and prevent false alarms from pets under 25 kg. COMPATIBLE WITH ALEXA GOOGLE & SMART LINKAGE: The Pir motion sensor can be used with Amazon Alexa, Google home, Siri compatible home automation. It can also be linked with other smart Wi-Fi devices. compatible example, when you open the door, the sensor will be triggered and the light will turn on automatically. THE UPGRADE USB WIFI SENSOR: Because the smart motion sensor is a 24-hour wifi online product, the power consumption will be much higher than other sensor products, so we design it powered by a USB cable, no battery needed, just plug it with USB cable all the time.