Basic parameters Size480 mm * 250 mm * 130 mm Weight: about 6 kg Working voltage: ac220v 50 hz Output voltage: dc24v The number of channels: 1-8 Digital tube display mode: highlight inspection way The input signal: 4-20 ma Signal output: (optional) 1-8 standard 4-20 ma current loop output, And with input signal one to one Communication interface :(optional) 1 road rs232 and rs485 bus interface Standard modbus rtu protocol or non- standard, can connect the computer monitor Response time: 8s The control output: ac 250 v, 30 v dc 10 a 10 a (relay switch output) Sampling accuracy: 12 bit ad Measurement range: 0-9999 (can be set ) Alarm way: first alarm more than 90 db alarm way; Second alarm more than 120 db Inspection time: 1severy road inspection 1 s Connection mode: can connect two wire, Three wire system 4-20 ma current signal of the transmitter Humidity range: - 10 ~ 50 Humidity: 15% ~ 70% rh (no condensation) Installation method: wall-mounted installation