Feature: 1. [Waterproof] The shell is waterproof, and can convert any standard 485 signal into a radio signal transmission, so you can use it with confidence. 2. [Support 2 Channel Communication] Temperature humidity sensor support 2 channel simultaneous communication, two different communication rates can be set to ensure short distance high speed communication, and long distance reliable communication. 3. [Encryption Technology] Wireless temperature humidity sensor adopt unique encryption technology to ensure that it is not monitored, to ensure reliable control, to meet your various need. 4. [Real Time Monitoring] Temperature humidity sensor transmitter can monitor its own power, signal and real time data in real time, and upload it through wireless communication. 5. [Widely Application] The data is uploaded every 5 minutes, can be used continuously for 3 years, with stable performance, and is widely used in agriculture and gardens. Specification: Item Type: Temperature Humidity Sensor Transmitter Material: ABS Product Size: Approx. 11.5 x 13.5 x 4 cm / 4.5 x 5.3 x 1.6 in Battery: 3.6V lithium battery 19000mah (Battery Included) Transmitter Circuit Working Temperature: -40℃~+60℃, 0%RH~80%RH Probe Working Humidity: 0~100%RH Long Term Stable Humidity: ≤1%RH/y Temperature: ≤0.1℃/year Response Time: Probe Code Other Humidity: ≤8s (1m/s wind speed) Output Signal: Wireless signal Application: Smart agriculture, garden Weight: Approx. 281g / 9.9oz. Package List: 1 x Temperature Humidity Transmitter1 x Antenna 4 x Accessories 1 x Matching Battery1 x English Manual