Manual

2.8 Battery Low Voltage Protection

(BLVP or commonly known as an LVD)

The PM400 unit has a built-in battery low voltage protection relay. It will disconnect the load once the battery voltage

drops below the threshold voltage. The default setting is 10.5Vdc and it can be changed by crystal central monitor or

mobile APP from 10.0Vdc to 11.7Vdc.

2.9 Battery Switch

The PM400 unit offers a convenient way to switch off the output of the service battery on-board. It protects the

service battery from being drained by electronics on board, completely isolating the battery. PM400 unit also supports

a remote manual battery switch. Before using the remote switch, ensure the ‘switch selector’ is set to ‘Remote’. The

switch is only effective when the system has no other energy resource for the load except the battery.

2.10 Precise Battery Measurement

PM400 unit has a battery measurement system controlled by microprocessor. It measures battery voltage, charge/

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Compared to conventional indicating meters, a small current can be measured and read accurately with this device.

With this feature, it highlights faults, alarms and installation errors.

ATTENTION: If you have loads connected directly on battery instead of PM400 Power Management System, the

measurement will not be accurate.

2.11 Scene mode setting

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in MSP10 and MSP2.

“Night mode ” on 10 Position Switch Panel or “Silent” mode on the Monitor

By pressing “Night mode” on the switch panel or “Silent mode”, all LED indicators of the 10 Position Switch and

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the fan for a noiseless night.

“Night Light ” on 2 Position Bedroom Switch

By pressing “Night Light”, the Ceiling light will be turned on, and by holding down “Night Light” button to adjust a

proper brightness for night without disturbing other’s sleeping. The brightness setting will be remembered.