7
device must less than 300mA,or it results the damage of host.
②
DC Battery Input: The polarity of 12V external backup
battery input terminal is
. When the host needs larger capacity
battery, this interface is used to connect backup battery. This interface
is equipped with a self-charge device and can automatically switch
between AC and DC. Avoid short circuit occurs in this interface. If
build-in backup battery is adopted, this interface should not be
connected with power supply.
③
Power Switch: When the backup battery switch is turned off,
it will stop working, but backup battery will self charge with AC
power.
④
Phone Set-up: Hold down the “Phone Set-up” key for 2.5s to
switch to the programmable device of dialling module. Please refer to
relevant parts in
“Operating Instructions” Section for specific
operations.
⑤
Fuse socket: AC power fuse is equipped with AC250V 0.1A
fuse tube.
⑥
AC Power Line: This host adopts 220V 50HZ AC power
supply.
⑦
Internal
phone Jack: It is connected with a user telephone.
⑥External wire
Jack: It is connected with local phone wire
V.
V.
V.
V.
Interface Performance and System Connection
V+ Terminal: Anode of 12V~13.8V DC voltage output
C Terminal: Cathode of 12V~13.8V DC voltage output, namely
circuit ground.
DC Input: If build-in backup battery has been selected, the host is
not required to connect with external backup battery.
Siren: An active siren is adopted, which will not affect the
