
Timeguard TGBT4N White Boostmaster 2 Hour Electronic Boost / Run Back Timer With ¼, ½, 1, 2 and 4 hour ON Times
TGBT4N
Timeguard TGBT4N BoostMaster Electronic Timer – Precision Control for Heaters & Lighting
The Timeguard TGBT4N BoostMaster offers reliable and adjustable timed control, making it an ideal solution for applications requiring timed power, such as immersion heaters and towel rails. With selectable boost times and a high load capacity, it ensures safe and efficient energy use across a range of domestic and commercial setups.
- Selectable Boost Durations: Choose from 15 mins, 30 mins, 1, 2, or 4-hour run-back options to suit usage needs.
- High Load Capacity: Supports up to 13A (3kW) resistive load – perfect for heaters, towel rails, or lighting circuits.
- Compact & Convenient Fit: Installs easily into a standard 25mm-deep flush or surface mount BS wall box.
- Versatile Application: Suitable for immersion heaters, room heaters, lighting, and other timed control uses.
- Digital Timer Operation: Electronic countdown system ensures reliable, easy-to-set time control.
Technical Specification
- Timer Mode: Boost
- Setting Type: Digital
- Operating Voltage: 230V AC, 50Hz
- Switch Rating: 13A (3kW) resistive, 1000W filament, 500W fluorescent, 100W CFL/LED
- Boost Times: 15 min, 30 min, 1 hr, 2 hr, 4 hr
✅ Upgrade control and energy efficiency with the Timeguard TGBT4N – a smart choice for safe, timed power management!

Temperature Range | 0|45 Degrees C |
Receiver Included | N |
Range | Timeguard Boostmaster |
Product | Timer |
Type | Boost |
Ingress Protection | IP20 |
Colour | White |
Length | 85 mm |
Voltage | 230 V |
Warranty | 3 Years |
Unit Weight | 0.113 kg |
Mounting | Surface |
Material | Polycarbonate PC |
Width | 85 mm |
Depth | 31 mm |
Current Rating | 13 A |
Wiring Method | Wired |
Programmable | N |
Supply Voltage | 230 V |
Timed/untimed | Timed |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.