Solar Water Heater Controller

Solar controller:
Function:
1,power off memory
2,water temperature preset
3,intelligent heating
4,water insufficient alert
5,leakage protection
6,constant heating
7,pipe warm keeping
8,water level preset
9,intelligent water loading
10,auto water loading
11,manual control
12,low pressure water loading
13,all-weather water supply
14,constant water level loading
15,auto control boosting pump