Wireless Temp Collector RF 433MHz 200 Bdevice Accepted 1200mAh Battery IoT Thermodetector for Data Transmission Item Type: Wireless Temp Collector Material: Aluminium Alloy Communication: RF 433MHz Communication Process: Mainly Divided into PC and Host Communication, Host and Bedevice Communication Communication Mode: Communication Between PC and Host Can Be Serial Port or Network, Serial Port Communication is RS232 Serial Port, Network Communication Can Be Realized Through Network Cable and WiFi Communication Time: a Complete Data Exchange Takes 10 Minutes, Data Exchange Takes 7 Minutes Between the Bedevice and the Host, and Data Exchange Takes 3 Minutes Between the Host and the PC Number of Connections: Each Host Can be Connected to 200 Bedevices. a PC Can be Connected to Only One Host Through Serial Port Communication. a PC Can be Connected to Multiple Hosts Through Network Communication Communication Distance: 700 Meters / 765.5yd in Open Space Battery Type: Inbuilt 1200mAh Lithium Ion Battery