Description: Input voltage: DC4.5V LR03*3 (not include battery) Quiescent Current: 30uA Low power onderspanning: 2.7V WiFi: 802.11b/g/n 2.4GHz Working Temperature: -10 ~ 55 Working humidity: 10%~90% RH Specifications: [1] Radio transmission circuit and coding technology to solve the problem of signal interference blocking [2] A variety of temperature modes can be adjusted, suitable for different scenarios [3] Wireless transmission of data signals, mobile phone remote monitoring [4] Ultra-low power consumption, long battery life [5] With low voltage monitoring prompt function [6] Send online reports to the host regularly [7] Anti-demolition design in the field of professional security [8] Split design, high reliability Package Included: 1×Sensor 1×User Manual Notes: 1. Product data with error ±0.5 is normal 2. The data reporting of temperature and humidity is conditional: Data reporting rules, temperature change ±1°, humidity change ±5%, which change, data report app platform