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Sangamo Round Pattern Astro Zone 4 Time Switch - 4 Pin 20A

£21999
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Sangamo Round Pattern Astro Zone 4 is a programmable time switch designed to control lighting circuits based on sunset and sunrise times specific to Zone 4 regions of the UK. The unit features a 4-pin configuration, 24-hour programming with on/off operations, and a 20A current rating suitable for controlling street lighting, security lighting and commercial exterior lighting installations.

The astro function automatically adjusts switching times throughout the year to match the changing daylight hours in Zone 4 areas, removing the need for manual seasonal reprogramming. The time switch mounts in standard electrical enclosures and connects via the 4-pin interface to lighting contactors or direct loads up to 20A at 230V. The 100-hour battery reserve maintains programming and timekeeping during mains power interruptions.

The round dial face displays a 24-hour clock with red graduations marking hourly and 15-minute intervals, allowing visual confirmation of current time and programmed switching positions. Brass terminals provide secure connection points, and the transparent cover allows inspection of the dial position without opening the enclosure. The unit measures 104mm diameter by 134mm depth and weighs 423g, fitting standard back boxes used in street furniture and commercial lighting control panels.

Specification
Product Net Weight (KG) 0.423
Product Gross Weight (KG) 0.467
Outer Gross Weight (KG) 0.42
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 is Zone 4 and does it cover my area?

Zone 4 covers specific UK regions with particular sunset and sunrise timing patterns. The Sangamo manual linked in the Downloads section includes a map showing which postcodes fall within Zone 4. If your installation is in a different zone, you will need the corresponding zone model to ensure accurate astro timing.

What is the 4-pin configuration used for?

The 4-pin interface connects the time switch to external lighting contactors or control circuits. This allows the low-current switching mechanism inside the time switch to control high-load lighting circuits indirectly, rather than switching the full load current directly through the unit.

How long does the battery reserve last?

The 100-hour battery reserve maintains programming and timekeeping during mains power cuts for approximately four days. After this period, if mains power has not been restored, the unit will require reprogramming once power returns.

Can the astro function be overridden?

Most Sangamo astro time switches allow manual override or adjustment of the programmed switching times. Refer to the product manual in the Downloads section for specific override procedures and programming instructions for this model.

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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    Description

    The Sangamo Round Pattern Astro Zone 4 is a programmable time switch designed to control lighting circuits based on sunset and sunrise times specific to Zone 4 regions of the UK. The unit features a 4-pin configuration, 24-hour programming with on/off operations, and a 20A current rating suitable for controlling street lighting, security lighting and commercial exterior lighting installations.

    The astro function automatically adjusts switching times throughout the year to match the changing daylight hours in Zone 4 areas, removing the need for manual seasonal reprogramming. The time switch mounts in standard electrical enclosures and connects via the 4-pin interface to lighting contactors or direct loads up to 20A at 230V. The 100-hour battery reserve maintains programming and timekeeping during mains power interruptions.

    The round dial face displays a 24-hour clock with red graduations marking hourly and 15-minute intervals, allowing visual confirmation of current time and programmed switching positions. Brass terminals provide secure connection points, and the transparent cover allows inspection of the dial position without opening the enclosure. The unit measures 104mm diameter by 134mm depth and weighs 423g, fitting standard back boxes used in street furniture and commercial lighting control panels.

    Specification
    Product Net Weight (KG) 0.423
    Product Gross Weight (KG) 0.467
    Outer Gross Weight (KG) 0.42
    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 is Zone 4 and does it cover my area?

    Zone 4 covers specific UK regions with particular sunset and sunrise timing patterns. The Sangamo manual linked in the Downloads section includes a map showing which postcodes fall within Zone 4. If your installation is in a different zone, you will need the corresponding zone model to ensure accurate astro timing.

    What is the 4-pin configuration used for?

    The 4-pin interface connects the time switch to external lighting contactors or control circuits. This allows the low-current switching mechanism inside the time switch to control high-load lighting circuits indirectly, rather than switching the full load current directly through the unit.

    How long does the battery reserve last?

    The 100-hour battery reserve maintains programming and timekeeping during mains power cuts for approximately four days. After this period, if mains power has not been restored, the unit will require reprogramming once power returns.

    Can the astro function be overridden?

    Most Sangamo astro time switches allow manual override or adjustment of the programmed switching times. Refer to the product manual in the Downloads section for specific override procedures and programming instructions for this model.

    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.