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Basic parameters
Size：480 mm * 250 mm * 130 mm
Weight: about 6 kg
Working voltage: AC220V 50 hz
Output voltage: DC24V
Channel number: 4, 6, 8 road

Display mode: multiplex highlight digital tube display directly
Signal input: 1-8 standard 4-20 ma current loop road input,

support two wire and three-wire system all sorts of transmitter

Response time: 8 seconds or less
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 digital bus interface,
Standard Modbus RTU protocol or non-standard,

can connect the computer monitor

Control   output：1-8 standard  relay output,with input signal one to one, 1 standard  public relay output,  whichever  alarm，the relay will be off.

Meansurement  range：0-9999（can  be  set  numerical） 

Alarm way : first alarm more than 90 db alarm way;

 second alarm more than 120 db
Temperature range: - 10 ℃ to 50 ℃
Humidity:15% ~ 70% RH (No condensation)
System power: < 50 w (8 road with no alarm)
Executionstandard: the combustible gas alarm controller GB16808-1997 technical requirements and test methods,
Installation method: wall-mounted installation