433MHz Wireless Window Door Alarm Sensor   Battery for 2 years.   1. This door&window sensor can be used with all the alarm hosts in our store   2 product parameters:    Encoder:eV1527   Radio frequency:433 MHz   Resistance:330K ohms   3. The alarm host that meet these three product parameters can be used with our door sensor.   For example:   * Tuya version of the alarm host in our store: G10/G11/G12/G30   * Non-Tuya version of the alarm host:    Alarm host-103   Alarm host-105   Alarm host-106   Alarm host-107   4. This door/window sensor cannot be used alone. It must be used together with the alarm host.   Features   1. Power Supply:DC 3V (CR2032 Lithium Battery x1)   2. Standby Current:<;1uA   3. Alarm Current:<;15mA   4. Transmitting Distance:<;80m (Open Area Interference)   5. Radio Frequency:433Mhz   6. Operation Condition:Temperature:0~55   7. Relative humidity:<;80%(non-condensing)   8. Transmitter dimension:69*23*9 mm (L*W*H)   9. Magent dimensions:52*8.5*9 mm ( L*W*H)   Working principle   360° all-around alert   It can be installed on doors, windows, drawers or any other object that can be closed and opened.   Easy To Installation   1. Double faced adhesive tape,install-and-play.   2. Equipped with a button, can be set as SOS emergency alarm, doorbell etc.   Product Certification   About our strength:   1,We are a professional manufacturer of alarm equipment.   2,Our products include alarm host, infrared detector, door or window detector, remote control, RFID card, siren, surveillance camera, smoke detector, gas (including carbon monoxide, natural gas, etc.) detectors.   3,Welcome customers to come to our store for consultation.   Quality Control:   Before Shipping ,We will open the box. Then We will test the quality 100% and install the software .   Feedback   1,If there is any question about our product or service:   Please be sure to contact our customer service staff first, we are very happy to help you. We will work hard to find the best solution until you are satisfied.   Please don't give us a bad evaluation, which does not help solve the problem.   2,If you are satisfied with our products and services, please leave 5 stars. thank you for your support .