Sangamo
Round Pattern Astro/Suntracker Zoned Time Switch
Round Pattern Astro/Suntracker Zoned Time Switch
SKU:Q550.13.11
Free Delivery on Sangamo products
How much will I need?
We recommend adding 10% of additional product to the calculation to account for errors, damages, and obstacles in your project
Couldn't load pickup availability
- Shipping protection for peace of mind
- Fast processing and delivery
- Flexible delivery options
Product Information
Sangamo Q550 Astro Dials come in 4 variations. Depending on where you are in the British Isles the switch is adjusted to match the slight differences in sunrise and sunset times. Simply locate where you are on the map and add the number on to the end of the part number or select the equivalent zone.

The ON operation always tracks SUNSET while the OFF operation can be made either to track SUNRISE, or to occur at a fixed time between 8:30pm and 1:00am.
A “day omission” device allows you to select any number of days in the week on which the switching cycle can be disabled. The Solar Time Switch is ideal for applications which require control linked to sunset and sunrise times. Popular applications for solar time switches include street, stairwell and security lighting. Once set, the switches track SUNSET and SUNRISE throughout the year, without the need to sense light levels. This avoids the installation and maintenance problems associated with photo sensing devices and means they can be left to operate unattended for years.
Key Features:
- Programming: 24 hour with 1 ON/OFF operations
- Current Rating: 20A
- Connection Pins: 3
- Battery Reserve: 100 hours
- Day Omit Dial: Yes (Omits the ‘ON’ operation)
Technical Specifications
| Brand | Sangamo |
| Conforms to | BS EN60730 |
| Dial calibration | 15 min divisions |
| Dimensions (mm) | 136 x 105.7 x 82 (H x W x D) |
| Dirt protection | Normal domestic dust deposits only |
| Display | Solar dial |
| Live parts protection | This timer is totally protected by its enclosure |
| Moisture protection | Ordinary - has no special protection against moisture |
| Mounting | Surface |
| Power reserve | 100 hrs (providing battery has been charged for 300 hrs) |
| Programming schedule | 24 hour programme with 1 ON/OFF operation per day |
| Temperature range | Designed to operate over a temperature range of 0°C to 50°C continuous |
Datasheets
Delivery Information
Delivery will always take place on a weekday (Mon - Fri excl. public holidays).
An exact delivery charge will be calculated at checkout based on your order and location.
Frequently asked questions
How do I track my order?
As soon as your order is dispatched, you'll receive a dispatch email with delivery dates and details for your order.
If you require an update on your order, you can email customerservice@i4lgroup.co.uk with your order number for assistance.
Can I order now and pay later?
Yes, we offer a variety of flexible payment options to all our customers.
When checking out online, you'll be able to avail of multiple buy now, pay later options with Klarna or PayPal.
The flexible payment options available to you at checkout will be based on the total value of your order.
For B2B customers, you can apply for a 30-day trade credit account, and you'll also unlock:
- Dedicated trade pricing
- Loyalty points and rewards
- A dedicated account manager
Do you really have the best prices online?
Yes! We even have a price match guarantee.
We are so confident that we have the best prices out there that we will match the price of any other online or local retailer.
If you find the same product cheaper elsewhere, we will match the price — just send us the quote or website link.
Read more: Price Match Guarantee
I have a large-scale project, can I get a quote?
Yes, if you are carrying out a construction project that requires a large quantity of materials, email sales@i4lgroup.co.uk with the following information and we will get back to you with your very own bespoke price quote:
- Delivery postcode and address
- Mobile number
- Company name
- A list of required materials and their quantities
Learn more on opening a trade account.
Can I open a trade account?
Yes! Trade customers can open a B2B account to unlock bespoke pricing, B2B discounts, trade credit, loyalty points, and a dedicated personal account manager.
You can learn more here: Open a Trade Account
Can I cancel or amend my order after placing it?
Yes, if your order has not yet been processed for dispatch, cancellation/ amendments should be possible.
Our team works quickly to get your order delivered as soon as possible so it is likely that your order will be processed for dispatch within 2-3 hours of purchase.
Contact us immediately via customerservice@i4lgroup.co.uk or call 020-3481-1978 during opening hours.
If you wish to amend your order after it has been processed by our team, it will be treated as a return or a separate new order.
Read more: Returns
What is your returns policy?
Changed your mind about your order? no problem! we offer a 14 day returns period after your order is delivered.
To avail of this your order must be unused, in its original packaging, and suitable for resale.
Refunds are issued immediately after the goods are received and inspected by our team.
If an item arrives damaged or incorrect, you must notify us within 48 hours of delivery.
Prior approval is needed before returning any goods – do not return without authorization.
Special order items are exempt from returns.
Read more: Returns
Why Choose Us?
| Factors |
|
Other Stores |
|---|---|---|
| Customer service | Easy to reach, and eager to help | Difficult to contact |
| Shipping speed | Fast and organised | Unpredictable |
| Competitive pricing | Price match guarantee | What you see is what you get |
| Loyalty program | Points + exclusive deals | Basic discounts |
| Expert advice | Free 1-on-1 sessions | Self-service only |
| Trade accounts | Bespoke pricing, trade credit, and dedicated account manager | none available |
- Choosing a selection results in a full page refresh.
- Opens in a new window.
Rated Excellent



