Control panels running on 12 or 24 V need a compact time clock that runs off the same low-voltage supply instead of a separate 120 V feed. The Intermatic FM1D50-LV is a 24-hour or 7-day electronic timer module powered from 12 VDC to 24 VAC/VDC, with an SPDT relay rated 15 A and up to 25 ON/OFF event pairs (50 setpoints) for HVAC, lighting or machinery schedules.
Why controls technicians pick it
- Low-voltage input (12 VDC to 24 VAC/VDC) fits 12 V and 24 V control panels.
- SPDT dry contacts: normally open and normally closed outputs for switching or interlocking.
- 50 setpoints (25 ON/OFF pairs) with day-of-week grouping for 24-hour or 7-day schedules.
- Manual override and a +1h button for daylight saving time.
- Mounts on a panel surface or flush; about 2,500 hours of carry-over when fully charged.
Specifications
| Spec |
Detail |
| Brand |
Intermatic |
| Model / SKU |
FM1D50-LV |
| Input |
12 VDC to 24 VAC/VDC, 50/60 Hz |
| Output |
SPDT (NO and NC) |
| NO contact |
15 A general purpose 277 VAC; 1000 W tungsten 120 VAC; 8 A ballast 277 VAC; 1 HP 250 VAC; B300 pilot duty |
| NC contact |
15 A general purpose 277 VAC; 12 A resistive 24 VDC; 1/2 HP 120/240 VAC |
| Programs |
25 ON/OFF pairs (50 setpoints), 24-hour or 7-day |
| Carry-over |
2,500 hours when fully charged |
| Operating temperature |
-15°C to 55°C |
| On power loss |
Relay goes OFF, then returns to programmed state |
Pro tip from the counter
The FM1D50 doesn't change for daylight saving time by itself; the manual has you press the +1h button at each change. Add that to the site's spring and fall checklist, or the schedule for fans or lighting runs an hour off for half the year.
Best for: 12 V and 24 V control panels, HVAC and ventilation scheduling, sign and parking lighting controls, OEM machinery, low-voltage building automation retrofits
Downloads: Installation and programming instructions (PDF)
Ships Canada-wide from Vaughan, ON. Controls contractors can get trade pricing through a quote or at (905) 553-7171.