Latest version, added the function "LACK OF COOLING AGENT LIQUID PROTECTION." with plastic plate attached.

1.Mode: auto,cool,dry,fan and heat.2.FAN: high, medium and low.3. Over heat/cold protection for room coil pipe.4.In heat mode, defrost according to temperature difference of inlet and outlet air.5.Lack of cooling agent(liquid) protection.6.Out-door fan controlled by a standalone output to make defrost effect well.7.Blow residual heat function.8. 3 minutes protecting delay to restart compressor .9. Status memorized,and automatically come back to previous running status after power supply comes again.10.Panel conrol all function,LED digits display.11. Avoid cold wind in the heat mode.12.TWO temperature sensors.13. Wind direction control.14.Emergent on/off key.15.Aux heater control.16.Timer inline/offline. 17.Sleep. 18.Suitable for split wall mounted air condition,floor standing air condition,window mounted air condition.