M-8 solar water heater controller

1, Photos:

2, Technical datas:

<1> Power supply: 220V
<2> Self power consumption: ≤5W 

<3> Measuring accuracy of temperature: ± 2 
<4> Temperature range of measurement: 0~110 
<5> Accuracy of controllable temperatuere: ± 2
<6> Water level: five classes display
<7> Power of booster pump or ribbon heater or circulation pump: ≤ 500W

<8> Action current of electric leakage: ≤ 10mA/0.1s
<9> Data of solenoid valve: DC 12V, with pressure and non pressure valve
Operation pressure of pressurized valve: 0.02Mpa~0.8Mpa, suitable for providing water directly 
Operation pressure of un-pressurized valve: 0.0Mpa, connected with water tank or low pressure water providing. 

3, Main functions:

<1> Time display
<2> Power on self-test 
<3> Water level upper-limited preset 
<4> Water level lower-limited preset 
<5> Upper&lower limited of heating temperature can be preset 
<6> Upper&lower temperature of temp-control water loading can be preset 
<7> Water temperature&level display 
<8> Water shortage alarms
<9> Full water alarm 
<10> Constant level water loading
<11> Manual water loading
<12> Temp-control water loading
<13> Compulsory water loading
<14> Sensitivity setting
<15> Timing water loading 
<16> Watering under low pressure

<17> Delayed to close water loading

<18> High-temperature explosion protection

<20> Automatic watering pressurization

<21> Heat preservation delay manually

<22> Timing heating

<23> Manual heating

<24> Constant-temp heating

<25> Heating protection 1

<26> Heating protection 2

<27> Double pipe fuction

<28> Intelligent mode

<29> Electric leakage protection

<30> Power-off memory