Prewired timer with 10m of cable
and croc clips

prewired 12 volt timer

£45.00 + £3 p&p

Plastic box to fit timer
(box and glands only)

prewired 12 volt timer

£18 +£3 p&p


latest projects ...chicken coop automatic door opener

12 Volt Timer





This 12 volt timer has been specially made to my spec , because i struggled to find one that met all my requirements its so simle to wire and even simpler to program , see the videos on how to wire and program , i can prewire it for you and even fit the cables and lamps if needed,..... If you look at other timers check to see if you can program them easily , has it got independant contacts (so important) has it got battery back up (extra important)

Click here to see video of how easy to wire up

Click here to see video of how easy it is to program

Timer £34 + £2 p&p

  • Digital time switch with daily and weekly programs
  • 12 volt LED power indicator with lcd display..........
  • independant contacts so you to switch any voltage
  • fitted With lithium battery for memory back up......
  • With three - way operation manual/auto/off..........
  • Simple and easy to program...see video...............
  • Minimum On/Off times of1 minute , 8 times a day

Dont have a paypal account??

Then send a cheque made payable to ...HMH Marketing ltd... to

119 school lane , brinscall, chorley, LANCS PR68PS


Solar Power......

its the future... Solar power is produced by collecting sunlight and converting it into electricity. This is done by using solar panels, which are large flat panels made up of many individual solar cells. It is most often used in remote locations, although it is becoming more popular in urban areas as well. ideal way to keep your batteries charged up

Solar Power

12 volt timers solar powerAs well as solar powered lights, there are other useful solar power items one of these is our highly popular Solar powered fan ventilator, designed for domestic, marine or caravan use ideal for small poultry houses.

(sorry sold out awaiting stock)

Uses for your 12 volt timer

12-Volt poultry lighting timer for free range chickens which are housed where mains electricity is not available.

Day length is important to a hens egg production. As winter approaches and the days start to shorten, egg production will reduce or even stop! To overcome this artificial poultry lighting is used

Our poultry lighting is ideal for free range chickens houses where mains electricity is not available. Connected to a 12-volt battery, the 12 volt lights will provide light throughout the winter months, making it viable to keep hens in more remote areas.

The 12 volt timer is adjusted so that it comes on for a set period thus maximising time between battery charges and ensuring that the free range chickens enjoy the benefits of natural daylight. At the end of the day a night period of 9 hours begins. No lighting is provided during this time allowing the hens to roost.

Just remember to charge your battery on a regular basis, or look at solar power or wind power to help charge the batteries if people are interested in this i will look into supplying this as well

How long will my battery last between charges?

Please use this as a guide, the best way to find what suits your requirements is by your own experience.

"The old car battery behind the shed, under the flower pots or in the garage probably won't be up to the job especially if it was faulty when removed from the car and has been unused for several months or years!"

How long Between Charges

You can calculate how long between charges by dividing the total lamp Wattage by the voltage (12V). Times that by how many hours per day the lamp will be on, then divide the Amp-hour rating of your battery by that.

For example:

With 1 lamp of 8W divided by 12V = 0.6 Amps.
If the lamp is on for eight hours in every 24 (0.6A x 8 Hours) = 4.8 Amp Hours of battery life per day.

If you have a 40 Amp-hour battery, 40 divided by 4.8 = 8.3 days between charges.

Most small car batteries are rated at 30 to 40 Ah, so expect roughly 6 to 8 days use from each charge. The power required when the lamps are off is insignificant.

Batteries intended for caravan or emergency lighting may be more suitable typically 60 - 85 amp hour. As a general rule heavier batteries contain more lead and have a higher Amp-hour rating.

How long between charges using a 12 volt battery
Battery rating Lamp Wattage Lamp on Time Time Between Charges
30Ah 8W 8 Hours 6 Days
40Ah 8W 8 Hours 8 Days
60Ah 8W 8 Hours 12.5 Days

There is also a PP3 (6LF22 / 6LR61) 9 volt battery, that maintains the timer cycle for up to 20 hours when the external power supply is removed.

The PP3 (6LF22 / 6LR61) 9 volt should be renewed annually.

A Word about Batteries

Old Batteries

If left unused for long periods, lead acid batteries tend to deteriorate, the plates "sulphate" and dramatically reduces the Amp Hour rating. A Sulphated battery will reach a fully charged state quickly but will also flatten quickly effectively acting like a much smaller battery. Charging and fattening a sulphated battery may revive it a little but full capacity will never be achieved.

Modern car Batteries

Modern car batteries are designed to provide large amounts of current for a short period of time rather than the small current for a long period as per this application. Batteries intended for caravan or emergency lighting are more suitable. As a general rule physically heavier batteries tend to contain more lead and have a higher Ah rating.

Charging CAUTION

When charging a lead acid cell you should be aware that explosive hydrogen gas is produced. Never smoke or use a naked flame near a charging battery and always turn off the charger before connecting or disconnecting it. When the cells start to bubble the battery is charged and only the electricity supply company benefit from leaving it longer.
Maintenance free batteries that have no holes to top up the electrolyte level should only be charged with a special charger, normal charging equipment will almost certainly cause permanent damage and possibly an explosion.