General data

 Frequency Wireless Communication

 470-510 MHz (CN470)

 863-870 MHz (EU868)

 915-928 MHz (US915)

 Housing material

 Plastic casing

 Protection class

 IP65

 LED indicator

 1 x LED

 Operating temperature

 0 ~ 50  °C

 Humidity

 <90%RH, no condensation

 Dimensions

 WTU-S & WTU-PM: 80 x 60 x 30.3 mm

 WTU-P: 130 x 90 x 40 mm

 Weight

 WTU-S & WTU-PM: 120 g 

 WTU-P: 470 g

 Electrical Data

 Power input

 WTU-S & WTU-PM: 18...28 VDC/0.5A

 WTU-P: 18...28 VDC/1A

 Power output

 WTU-S & WTU-PM: 18...28 VDC/0.5A

 WTU-P: 24 VDC/0.5A

 Power consumption

 WTU-S&WTU-PM: <= 0.3 W

 WTU-P: <= 0.5 W

 Battery

 WTU-P: Lithium ion battery,

 3500 mAh, 11.1 V

 Interface

 LED

 Constant green: Power on

 Blinking green: Receiving data

 Constant red: Error

 Blinking red: Transmitting data

 Status screen

 WTU-P: Battery level display

 Connector

 RS485 (Modbus/RTU)

 Transmission method

 Transparent data transmission

 Encryption technology

 AES 128-bit encryption for secure data 

 transmission