A mechanical timer switch is easy to set once you know the three things to line up: the current time on the dial, the pins or tabs for when you want it on, and the switch position. Most mistakes come from setting the wrong time of day on the dial. This guide gives the steps, the common mistakes, and the digital timers you can program on a screen if you would rather skip the dial.
Setting a mechanical timer in four steps
- Set the current time. Turn the dial until the arrow points at the time of day now.
- Choose the on times. Push the pins or tabs towards the centre for the periods when you want the load on.
- Check the switch. Set it to the timer position, not permanently on or off.
- Test it. Turn the dial forward and listen for the click at the start and end of an on period.
If the lights come on at the wrong time, the dial time is almost always the culprit, so check that first.
Common mistakes
- Setting the dial to the wrong time of day.
- Leaving the switch on permanently on or off.
- Plugging in a load larger than the timer is rated for.
The simpler way: a digital timer you program on a screen
A digital timer replaces the dial and pins with an LCD and buttons. The Manhua MET-UK is a 16A timer plug that needs no wiring at all: plug it into a socket, set daily or weekly programs, and it keeps the schedule with battery backup. It suits fridges, lights, fans, routers and aquarium filters wherever there is no access to a distribution board.
For lights and pumps on a board: ManHua MT15
The ManHua MT15 is a 16A digital timer rated 240V AC with hourly, daily and weekly programs, up to 17 settings and battery backup. It has two separate control terminals, so it can schedule two circuits, and it mounts on a DIN rail.
Actual product photos ofManHua MT15 Digital Timer
For three-phase and DC circuits
The ManHua MT317 is a 3-phase timer for 380V circuits that a single-phase timer cannot switch, for factory machinery and large lighting runs. The Manhua MT316S is a 12V DC timer accurate to the second with up to 28 settings a day, for solar systems and irrigation valves.
Manhua MT316S 12V DC Timer Switch with Seconds
Manhua MT316s 12V DC timer switch, accurate to the second for short repeated cycles like solar charging….
Actual product photos ofManhua MT316S 12V DC
| Feature | ManHua MT317 3-Phase Timer | Manhua MT316S 12V DC Timer Switch with Seconds | ManHua MT15 Digital Timer Switch | Manhua MET-UK |
|---|---|---|---|---|
| Product | ||||
| Price | KSh 4,300 | KSh 2,000 | KSh 1,950 | KSh 2,000 |
| Voltage | 380V AC | 12V DC | 240V AC | 230V AC |
| Program Type | Daily, Weekly | Seconds, Daily, Weekly | Hourly, Daily, Weekly | Daily, Weekly |
| Max Programs | 17 | 28 (highest) | 17 | 17 |
| Phase | Three Phase | Not Applicable | Single Phase | Single Phase |
| DIN Rail Mount | Yes | Yes | Yes | No |
| Stands out | Highest max programs | |||
| Suits | 380V three-phase factory machinery, large lighting runs | Low voltage lighting, solar systems, irrigation valves and small motors on 12V DC circuits that need… | Lights, streetlights, signage, fridges, security systems and irrigation pumps across homes, schools, offices | Fridges, lights, fans, routers, aquarium filters and other plug-in appliances |
| Link | View & Buy | View & Buy | View & Buy | View & Buy |
Which should you choose
Keep the mechanical timer if you want one simple on and off. Choose the MET-UK for plug-in schedules, the MT15 for lights and pumps on a board, and the others for three-phase or 12V DC.
Other options worth a look
- ManHua MT822 Astronomical Timer Switch | 2 Relay, 240V 16AKSh 4,000
- Manhua MT619HPV 12V DC Timer | LCD Programmable, Solar & PumpsKSh 1,950
- ManHua MT316S AC Timer Switch with Seconds | 25A 220VAC, 1 Sec to 168 HrsKSh 2,000
- ManHua NKG-3 Random Timer Switch | AC 220V 16A, Security LightingKSh 3,800
- Manhua KG316T Timer Switch with Seconds | 25A 240VKSh 1,800
- ManHua MT102C 16A 12V DC Timer | Lights, Irrigation AutomationKSh 1,750
Open the card of the timer that fits your circuit to check current price and stock.
Check the Manhua MET-UK timer plugKSh 2,000 · In stock
Where you would use it
- Security lights Set the lights to come on at dusk and go off at a fixed time.
- Fridge and fans A plug-in timer runs an appliance on a daily or weekly schedule.
- Factory circuits A 3-phase timer switches 380V machinery and large lighting runs.
Frequently asked questions
The most common cause is the dial showing the wrong time of day. Turn it until the arrow points at the current time.
Not for the Manhua MET-UK. It is a plug-in timer that needs no wiring, and it keeps its schedule with battery backup.
The ManHua MT15, which has two separate control terminals.
Yes, with a 12V DC model such as the Manhua MT316S, which is accurate to the second.
