5
4
7
.
LCD Interface Instructions
①
②
③
1
.
GSM signal intensity. It only displayed when SIM card inserted GSM
network registered successfully. 3 beams indicate signal strong, 2
beams indicate good, 1 beam indicates weak
2
.
GPRS network connected successfully.The icon will flash when GSM
network registered successfully and opened user online alarm
function, otherwise this icon will not appear.
3. Gas concentration.When gas concentration reaches 8%LEL, alarm
will be triggered.
6
.
Instructions of Side Jack and TEST Key
USB 5V jack
Usage
Main power supply port
Function description
TEST key
Click
1.There is no beep by pressing
TEST when system is preheating.
2.Click TEST at normal standby
status:
①
short beep thrice : indicates
GSM network is under
registering, or no SIM card.
②
long beep once: indicate SIM
inserted and GSM network
registered successful.
3.When alarm occur and gas
concentration below 4%LEL,
Click TEST to mute status. Click
TEST with a long beep at mute
status.
TEST
USB 5V
Port or function
key
Connect Micro USB 5V
-1000mA standard power
supply
