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No. Function No. Function
1 Power connector 11 Emergency stop signal connector
2 Solenoid valve connector 12 Monitoring PC WIFI connector
3 Low-power standby control connector 13 Power suppression signal connector
4 Compressor heating tape connector 14 Expansion PCB 12VDC power supply connector
5 High pressure switch connector 15 Zigbee wireless communication connector
6 Outdoor EEV connector 16 Expansion PCB communication connector
7 Ambient temperature, coil temperature sensor 17 Reserved password lock decryption connector
8 Indoor communicating connector 18 Reserved PM2.5 detection connector
9 Monitoring computer connector 19 Programming connector
10 Centralized control 485 communication connector 20 Module board communicating connector
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