Basic parameters Size460 mm * 300 mm * 150 mm Weight: about 7 kg Working voltage: ac220v 50 hz Output voltage: dc24v The number of channels: 1-8 Digital tube display mode: highlight inspection way Response time: ï8s Signal input: 1-8 standard 4-20 ma current loop road input, Support two wire and three-wire system all sorts of transmitter Signal output: (optional) 1-8 standard 4-20 ma current loop output, And with input signal one to one Control output: 1-8 public relay output, 1 road output relay , Relay and when any alarm all the w ay Sampling accuracy: 12 bit ad Measurement range: 0-9999 (can be set ) Alarm : first alarm more than 90 db alarm way; second alarm more than 120 db Temperature range: - 10 ? ~ 50 Humidity: 15% ~ 70% rh (no condensation) System power: < 50 w (8 road with no alarm) Execution standard: the combustible gas alarm controller gb16808-1997 technical requirements and test methods, Installation method: wall-mounted installation