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Description
The Timeguard STBT4 Electronic Boost Timer is a simple, reliable push-button timer designed for controlling immersion heaters, extractor fans, and other 13A resistive loads in residential and commercial settings. Simply press the button to boost your heating or ventilation for up to 2 hours — no complex programming required.
Timeguard STBT4 Electronic Boost Timer – Key Features & Specifications
Built for ease of use, the STBT4 offers four selectable ON time periods at the press of a button, making it ideal for bathrooms, utility rooms, and plant rooms where timed boost control is needed. It fits neatly into standard 25mm flush or surface back boxes and operates on 230V AC.
- Simple push-button control — no programming needed
- 4 selectable boost periods: 15 min, 30 min, 1 hour, or 2 hours
- 13A (3kW) resistive switch rating at 230V AC
- Fits 25mm flush or surface back boxes
- Compatible with 1.5–2.5mm² flexible cable
- Conforms to EMC and Low Voltage Directives (73/23/EEC, 89/336/EEC)
- Compact dimensions: 85mm (W) × 85mm (H) × 16mm (D)
The Timeguard STBT4 is a dependable, no-fuss boost timer built to last — ideal for any installer or homeowner looking for straightforward timed control.
Frequently Asked Questions
Find answers to common questions about our products and services
We offer standard delivery (2-5 working days) and express delivery (1-2 working days). Free standard delivery on orders over £85. All orders are tracked, and you'll receive updates via email.
We accept returns within 30 days of delivery. Items must be unused and in original packaging. Simply contact our customer service team to initiate a return. Refunds are processed within 2-5 working days once items are received
Feel free to drop us a message using the chat button in the bottom right, and one of our team members will get back to you as soon as they can. Alternatively, you can give us a call on 01924 4222999 (Ext 2) or send us an email at acaselec@gmail.com
Yes, all our products are fully certified and sourced from trusted UK suppliers.
We only stock genuine items from reputable brands, ensuring every product meets UK safety and quality standards. All products are held in our UK warehouse.
Our customer support team is available Monday-Friday, 9am-5pm. You can reach us via email, phone, or live chat. We aim to respond to all enquiries within 24 hours.
Yes, we offer competitive pricing for trade customers and bulk orders. Contact our sales team for a custom quote on larger quantities or ongoing supply arrangements.



