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Sangamo Astro Zone 4 Time Switch 4 Pin 2 On/Off - 20A 24 Hour

£22499
The RRP is the manufacturer's recommended retail price of the item.
172 In Stock - Ready to Ship
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Description

The Sangamo Astro Zone 4 is a programmable 24-hour time switch with astronomical correction, designed to control lighting circuits based on sunset and sunrise times throughout the year. It uses a 4-pin plug-in mounting system and allows two on/off operations per day, with the switching times automatically adjusting as daylight hours change across the seasons.

Designed for street lighting, security lighting, car park illumination and shopfront window displays, the Zone 4 eliminates the need to manually reprogram switching times as seasons change. The astronomical algorithm calculates local sunset and sunrise based on the programmed latitude and longitude, then applies user-defined offset times (e.g. switch on 30 minutes before sunset, switch off 30 minutes after sunrise) to create the daily schedule. The 20A rating handles typical lighting loads including LED, fluorescent and discharge lamp circuits.

The clear polycarbonate dial shows the current time and scheduled switching points, with brass terminal contacts visible behind the face. A 100-hour battery reserve maintains the programmed schedule and clock during mains power interruptions, preventing the need to reprogram after outages. The 4-pin mounting system allows the timer head to be removed from its base for programming or replacement without disturbing the wiring.

The unit measures 104mm wide by 83mm deep by 134mm high and weighs 438g. The Zone 4 designation refers to the UK/Ireland astronomical zone used for sunset/sunrise calculation — other zone variants exist for different latitudes but are not interchangeable without reprogramming.

Specification
Product Net Weight (KG) 0.438
Product Gross Weight (KG) 0.482
Outer Gross Weight (KG) 0.44
Product Length (mm) 104
Product Width (mm) 83
Product Height (mm) 134
Outer Length (mm) 104
Outer Width (mm) 83
Outer Height (mm) 134
Downloads

Product Specification Sheet

Product Manual

Frequently Asked

What does the astronomical function do?

The astronomical function calculates local sunset and sunrise times based on programmed latitude and longitude, then automatically adjusts the switching schedule as daylight hours change throughout the year. This eliminates manual reprogramming as seasons change.

What happens during a power cut?

The 100-hour battery reserve maintains the programmed schedule and clock during mains interruptions. When power is restored the timer continues operating from the correct time without needing reprogramming.

Can the 4-pin head be removed for programming?

Yes. The 4-pin mounting system allows the timer head to be unplugged from its base for bench programming or replacement without disconnecting the wiring to the base unit.

What does Zone 4 mean?

Zone 4 refers to the UK and Ireland astronomical zone used for sunset/sunrise calculation. Other zone variants exist for different latitudes but require different models — the zone number cannot be changed on an installed unit.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

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Fits standard UK back boxes

Designed to fit standard UK back boxes for a straightforward swap of your existing fittings.

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Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

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    Description

    The Sangamo Astro Zone 4 is a programmable 24-hour time switch with astronomical correction, designed to control lighting circuits based on sunset and sunrise times throughout the year. It uses a 4-pin plug-in mounting system and allows two on/off operations per day, with the switching times automatically adjusting as daylight hours change across the seasons.

    Designed for street lighting, security lighting, car park illumination and shopfront window displays, the Zone 4 eliminates the need to manually reprogram switching times as seasons change. The astronomical algorithm calculates local sunset and sunrise based on the programmed latitude and longitude, then applies user-defined offset times (e.g. switch on 30 minutes before sunset, switch off 30 minutes after sunrise) to create the daily schedule. The 20A rating handles typical lighting loads including LED, fluorescent and discharge lamp circuits.

    The clear polycarbonate dial shows the current time and scheduled switching points, with brass terminal contacts visible behind the face. A 100-hour battery reserve maintains the programmed schedule and clock during mains power interruptions, preventing the need to reprogram after outages. The 4-pin mounting system allows the timer head to be removed from its base for programming or replacement without disturbing the wiring.

    The unit measures 104mm wide by 83mm deep by 134mm high and weighs 438g. The Zone 4 designation refers to the UK/Ireland astronomical zone used for sunset/sunrise calculation — other zone variants exist for different latitudes but are not interchangeable without reprogramming.

    Specification
    Product Net Weight (KG) 0.438
    Product Gross Weight (KG) 0.482
    Outer Gross Weight (KG) 0.44
    Product Length (mm) 104
    Product Width (mm) 83
    Product Height (mm) 134
    Outer Length (mm) 104
    Outer Width (mm) 83
    Outer Height (mm) 134
    Downloads

    Product Specification Sheet

    Product Manual

    Frequently Asked

    What does the astronomical function do?

    The astronomical function calculates local sunset and sunrise times based on programmed latitude and longitude, then automatically adjusts the switching schedule as daylight hours change throughout the year. This eliminates manual reprogramming as seasons change.

    What happens during a power cut?

    The 100-hour battery reserve maintains the programmed schedule and clock during mains interruptions. When power is restored the timer continues operating from the correct time without needing reprogramming.

    Can the 4-pin head be removed for programming?

    Yes. The 4-pin mounting system allows the timer head to be unplugged from its base for bench programming or replacement without disconnecting the wiring to the base unit.

    What does Zone 4 mean?

    Zone 4 refers to the UK and Ireland astronomical zone used for sunset/sunrise calculation. Other zone variants exist for different latitudes but require different models — the zone number cannot be changed on an installed unit.

    Shipping & Returns

    Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

    Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

    To arrange a return, call us on 020 8149 5199 or use our contact page.