Digital Programmable Room Thermostat Grasslin HWPRS for Gas and Oil Heating Systems

Model No. RS4 by: Grasslin (TFC Group).
£29.32 Ex. VAT
List price £45.25 You save £15.93!
This item requires:

Free delivery
(over £100 +VAT, applies to zone A and B only, £6 +VAT otherwise)

Normally In Stock

Click & Collect

Order online & collect in store

Our customers love us - read their reviews

Wishlist Ask a question Compare

Grasslin HWPRS is a programmable room thermostat with a blue LCD screen, a battery-powered thermostat - fully programmable. This is a thermostat which can safely replace any standard room thermostat; it is designed to work especially with gas and oil heating systems. If you want to control an electric heating system, please note that the rating on this thermostat is 3A sensitive. It is a battery powered thermostat for wall mounting witht he help of the backplate supplied, and it provides a volt-free contact to switch any load up to 3A @ 230V 50Hz. You can position this thermostat wherever you would normally fit a room thermostat. 

The RS4 HWPRS is a programmable thermostat (with a factory pre-set program), and some of the additional functions are: frost protection, review temperature setting, temperature override (temperature adjustment), low battery warning, and sleep mode. 

Grasslin HWPRS Digital Programmable Room Thermostat - Features

  • Battery powered: it uses 2 x AA (LR6) alkaline
  • LCD display, blue backlight
  • Product: Tower Controls Grasslin HWPRS Digital Programmable Room Thermostat
  • Time display 12 hour am / pm
  • Time accuracy: ± 1 min / month
  • Operating Control range: 10—350C in 0.50C steps.
  • Temperature control differential: 0.50C
  • Frost protection temperature: 5.00C
  • Operating temperature range: 0 — 500C
  • Operating humidity range: 0—90% (non-condensing)
  • ErP Class 1
  • Relay output: Volt-free 3A (resistive)
  • Relay output: Volt-free 3A (resistive)
  • Programmable thermostat: 5 programmable periods per day, weekday/weekend block programming or individual day programming configuration
  • Volt free NO Contact (2 wire connection)


Follow us for exclusive offers and tips about lighting, switches and sockets

Get in touch

Telephone 020 7263 8007

Fax 020 7272 3007

Sparks Electrical Wholesalers Ltd, 659-661 Holloway Road, Archway, London, N19 5SE, United Kingdom
Registered in England. Company No. 2238028. VAT Reg No: GB 505 6899 17. Copyright © 2003-2019 SparksDirect

Award Winning Ecommerce from Cyber-Duck