NORMAL OPEN, NORMAL CLOSED AND MIXED TYPE RELAYS
Relays can mainly be divided into three types: normal open, normal closed and mixed type relays.
TYPE OF STANDARDIZED RELAYS
1M ···················· 1 Make
2M ···················· 2 Make
1T ···················· 1 Transfer
1M·1B ···················· 1 Make 1 Break