Features of  SR-EH120

1.With an all-new wireless remote control design, a hand-held device can be used to modify controller parameters and read system information.
2.Fully-digital and high-precision constant current control boasting an efficiency of up to 96%.
3.Supports 12 V and 24 V lead-acid batteries and lithium batteries.
4.Features a DC detection function. If DC available, the system will automatically switch to DC power supply when the battery voltage falls to the DC switching point; if DC powers off, the system will shut off output when the battery reaches the over-discharge point after continuous discharging.
5.Boasts an adjustable operating current range of 0.15 A from 3.96 A and an adjustment precision of 30 mA.
6.Employs a load triple-stage dimming and morning light design, with an operating duration adjustable from 0 to 15 hours and a power settable from 0 to 100%.
7.Data communication adopts a multi-time two-way handshake protocol and a data compression algorithm, realizing precise and fast data transmission.
8.True constant current rather than current-limiting control ensures smooth and stable output current, effectively reducing LED light attenuation and extending LED service life.
9.A metal case and an IP68 waterproof level enable the device to operate in various kinds of tough conditions.
10Adopts an improved charging algorithm to reduce the vulcanization effect caused by battery over-discharging, significantly extending the battery's service life.
11.An overheat protection function enables the device to scale down the load or shut off the load completely when its temperature exceeds a certain point.
12.A range of protection measures such as battery reverse-connection protection, LED short-circuit and open-circuit protection, etc., put the system under comprehensive and constant guard.

Solar Controller Wiring Instructions
Wiring sequence:
1) Connect the load first, and then connect the battery, the idle indicator of the controller is on, and after waiting for 30 seconds, the load will be on;
2) Finally connect the solar panel, wait for 70 seconds, the controller enters the charging state, the charging indicator of the controller lights up, and the load is turned off. If you wire it at night, the controller won't go into charging and the load will work all the time.
3) After wiring, please wrap the wiring head with waterproof tape to prevent water from entering.

Optional function introduction

1. Energy saving mode:
The controller automatically reduces the output power of the load according to the remaining capacity of the battery, thereby extending the working time of the load. For example: Set the take-off and drop-off voltage of the drop power to 125V, the termination voltage to 11V, and the termination voltage output power percentage to be 30%.
When the battery voltage > 125v, the load works according to 100% of the set power. When the battery voltage is between 125V and 11v, the controller will reduce the output power according to a certain proportion. When the battery voltage drops below 11v, the controller will Output a small discharge power (discharge current is 25mA) and keep it until the battery undervoltage. (The power reduction curve is shown in the figure below)

2. Morning light mode:
The morning light mode can only be checked when the controller is set to 3 periods or 4 periods. The morning light mode means that the controller automatically adjusts the working time of the load according to different night lengths, and finally enables the load to turn on the lights in the evening and turn off the lights in the daytime throughout the year.