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PR-23 instrucon manual
8.1.7 Message HIGH SENSOR HUMIDITY
8.1.8 Message HIGH SENSOR TEMP
3 SENSOR STATUS
8.1.9 Message HIGH TRANSMITTER TEMP
3 SENSOR STATUS
DTR TMP
8.1.10 Message LOW TRANSMITTER VOLT
8.1.11 Relays and switches not working
8.1.12 Output signal error during NORMAL OPERATION