Frequently Asked Questions
Relay monitoring load
Dry contact module need to continuosly monitor the relay state. This requires maintaining signal integrity and voltage stability, which draws more power during outages
Voltage Sensitivity
Dry contact modules rely on precise voltage levels to ensure reliable switching. When the battery voltage dips, the module compensates by pulling more current, accelerating drain.
Backup Stress
Unlike a temperature module (which mostly senses and reports values), the dry contact module may need to hold relay states or keep circuits active, which consumes more energy.
Cycle Wear
If the AC power fluctuates, the dry contact module experiences frequent transitions between power loss and power resume and these repeated cycle degrade battery capacity faster than the relatively steady operation of a temperature/humidity module.
Environment
Hot environments can accelerate battery reactions, causing faster discharge and capacity loss.
Ideal range: Around 15 degree to 25 degree celcius
In short:
Dry contact modules drain faster because they actively maintain relay monitoring and switching integrity, while temperature modules only sense and report values, which is a lighter load.
Note:-
IF battery drain fast (less than 2 months) even the power loss dry contact module detect power source is ON all time, then there is possibility the module's board is faulty and require replacement.