Spec：

• ● It has room station、door entrance、center station port and two head wiring port.
• ● Occupies sound indicator and break off singal indicator.
• ● Room Station No.：12 digit code set up，one area can set up to #999 buildings
• ● Indicator light for breakdown.
• ● Power Source：DC18V
• ● Power Consumption：Standby 25mA˙Max. 60mA
• ● Dimension：180mmX125mmX32mm