| Safety | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | Multiple protection of   overvoltage, delay, overcurrent, overheating, leakage, etc. | 
  
    | Circulation Interface | G1/2" Male thread (OD14mm   Barb) | G1/2" Male thread (OD16mm   Barb) | G1/2" Male thread (OD16mm   Barb) | G1/2" Male thread (OD11mm   Barb) | G1/2" Male thread (OD11mm   Barb) | G1/2" Male thread (OD14mm   Barb) | G1/2" Male thread (OD16mm   Barb) | G1/2" Male thread (OD16mm   Barb) |