Intended use: The RS485-TTL ”INTR” interface enables connecting of the PSU of the EN54C-LCD series to the RS485 bus remaining galvanic isolation. The communication in the RS485 bus is due to a two-way channel, differential in a half-duplex system where transmitting and receiving data is alternate. Power supply: 5V DC (max.30mA). Transmission’s speed: Max. 115200 bauds, with parity check. Dimensions: 63 x 50 x 20 [mm]. Warranty: 5 years form the date of production. Works with the PowerSecurity programming software.