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![](http://hypervac.com/wp-content/uploads/2023/05/HOUR-METER.jpg)
Alternator / Hour Meter Time Delay
- The alternator relay provides a means of automatically alternating the operation of two separate air compressors.
- Time delay allows two separate units to be started and stopped at the same time without creating a power surge.
![](https://hypervac.com/wp-content/uploads/2023/05/HOUR-METER.jpg)
Description | Part # |
Automatic two compressor alternator relay 230 volt | ALT230 |
Automatic two compressor alternator relay 460 volt | ALT460 |
Hour meter (24 to 277 volt) | HRM75 |
Hour meter for gas engines | HRM50 |
Time delay 18 to 240 volt 1-1023 seconds | TD100 |
Low oil control only (no fittings or extra wires) | 6304 |
Float switch for low oil control only | 6304B |