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Services / Request & Help

Why does the sensitivity become low when power on?
This product is professionally used to detect CO. Powdered carbon in its sensor will absorb the vapor after long time lying. The sensitivity will become normal after powering on a while when the moisture volatilizes.

Why do the red indicators flash quickly for a long time when some LH937F sensors power on?
It indicates the battery is in low-voltage. Because of lack of using, the battery is protected from discharging. When the power is on, the internal voltage is not stimulated completely which lead to the low-voltage. It will be solved after several times power on and off.

Why do the events in the alarm receiving center of the dial alarm control panel differ from the actual alarm event?
That is because the difference of the event codes between control panel default and alarm receiving center software default. Set the two codes as the same according to the manual.

When set personal number on LHD6003-8 control panel, the service indicator flashes quickly, and it dials though no trigger in the zone.
The factory default of this control panel is suitable to connect to the alarm receiving center. When telephone number is set on the control panel, it will generate the information of AC power or battery loss, arm/disarm and test report and then upload to the set number. Therefore, it will dial personal telephone. However, because of personal phone, when the report sent, it has no handshaking signal and feedback report. The control panel automatically makes it communication fault, so the indicator flashes quickly. Set all the unused report code as 0, reset the control panel after disarming and the problem will be solved.

Whether the trifurcating line can be used when the detector is networking?
Yes. The power cathode and signal line terminal can put as one line, the anode and the other signal line respectively use one line.

How and what does LHD6000 control panel link?
Linkage equipment terminals of LHD6000 control panel are KG1 and KG2 terminals. The output is a switch value signal, and can be set to linkage output under different status and link to operation equipment due to different alarm, such as: camera, lamps, alarm indicating equipment etc. Connect the KG1 and KG2 as switches of the linkage equipment power. But when link AC 220V power supplier, user needs to extra add a same relay to it because the relay on the control panel only load the voltage below AC 120V.