Feature Dual monitoring detection, infrared and radar dual sensing, low false alarm rate; the indicator of detector can be turned off,making it more private. Flexible use and multi-purpose.Receiver can add up to 8 transmitters like detector,magnetic sensor, vibration sensor and doorbell button etc.And can add up to 8 remotes. Professional high quality loudspeaker with up to 113dB loud alarm effectively scare away thieves. 8 chord music chip, loud and melodious ringtone is made over the 40mm big loudspeaker. Three-layer waterproof detectorsoftware anti-interference algorithm reduce false alarms. Suitable for indoor and outdoorsuch as doorwaydrivewaygarage,mailbox... More applications are waiting for you to explore! NOTE:The alarm and sensor of this product can only be paired with each other(So does the remote control). If you need to buy the alarm and sensor separately to pair with your own alarm system, they may not be paired. If you are not sure, you can contact us 11 ringtones for you to choose 4 levels adjustable volume can be up to 113dB.Choose the ringtone you need according to different occasions.(Remember to swith on the Receiver, or there's no sound.) IP64 Waterproof IP64 means that the product can prevent the intrusion of solid foreign objects with a diameter greater than 12.5mm and prevent splashing water from intruding. The indicator light of detector can be turned on/off, making it more private. Open the battery cover and install batteries, long press the hidden setting hole as shown in the figure with ejector pin. If the LED in the hole flashes twice quickly, it means that the sensor indicator is turned on; if the LED in the hole keeps on once, it means the sensor indicator is off. Distinguish the corresponing sensor Receiver has 8 different color zones, each color zone can only program one transmitter. So one receiver can add up to 8 transmitters. It assign color in order: red, green, blue, cyan, yellow, purple, white, multi-color.1 Receiver can pair up to 8 remote controls. Note:If multiple sensors trigger at the same time, the receiver only responds to the first trigger. How to pair? Step 1, Press and hold the M pairing button(Receiver) until it makes"du" sound and light on to enter the pairing program . Step 2, Trigger sensor response(Wave your hand in front of the infrared sensor or separate magnetic sensor). Step 3. You can hear du and see the light off. Step 4. Success!Testing! Remember to switch on the receiver~ If you want to delete all pairing, press and hold the M pairing button(Receiver) until it makes"dududu" sound and red LED indicator flashes 3 times. Package Reference Specifications Color: White Material: ABS Volume: 113 ~ 25dB Wireless range: 280m/918ft Ring Volume: 113dB Working frequency: 433.92MHz Certification: CE, CCC, CQC Transmitter Curtain Sensor Power Supply: AA alkaline battery x 2 (not included) Battery lifespan:4-7 months (based on 30 minutes per day) Motion detecting range: 2 - 8 m/6.6-26ft Standby current: 100 A Transmitting power: less than 1mW Microwave radar frequency: 5.8GHz Detector: IP64 waterproof (Receiver is NOT waterproofindoor use only) Receiver Power Supply : Micro USB or AA alkaline battery x 3 (not included) Battery lifespan: 5-7 months (based on 30 minutes per day) Magnetic Sensor Power Supply: AAA alkaline battery x 1 (included) Battery lifespan: >2 years Standby current: <40 A