Pioneer solar water heater controller

1, Photos:

2, Technical datas:

<1> Power supply: 220/110VAC, power dissipation<5W
<2> Precision of temperature measurement: ± 2℃

<3> Range of temperature measurement: 0~90℃
<4> Precision of temperature controlling: + 2℃  
<5> Water level: five levels 
<6> Controllable pump or power of electric band heater: <500W 
<7> Power of controllable electric heating: < 1500W, 3000W available 

<8> Action-current of power-leakage: ≤10mA/0.1s  
<9> Parameter of electromagnetic valve: DC 12V(valve with or without pressure)
Working pressure with valve and pressure : 0.02Mpa, available to direct water supply 
Working pressure with valve without pressure : 0.0Mpa, available to cistern supply or low-pressure water supply 

3, Main functions: 

<1> Water temperature display   
<2> Water level display 
<3> Wlock display   
<4> Water level preset
<5> Water temperature preset 
<6> Automatic stop when water full 
<7> Water supply when lack of water 
<8> Manual water supply 
<9> Timing water supply 
<10> Forced water supply 
<11> Manual heating 
<12> Timing heating 
<13> Constant temperature heating 
<14> Electric leakage protection 
<15> Pipe insulation 
<16> Anti-dry-heating function

<17> Memory function when power off 
<18> Intelligent mode 
<19> Timing mode 
<20> Temperature control mode 
<21> Second time timing water supply 
<22> Second time timing heating 
<23> Pipe explosion protection