---
category:
  - "[[Journal]]"
type:
  - "[[Log]]"
title: Home assistant plant room relay box
created: 2026-01-20T19:57:18
date: 2026-01-20
tags:
  - research
---
some notes on the relay box I'm going to put in to control the underfloor heating in the [[plant room|plant room]]

Max wall space 200 height x 350 width

Sonoff 4CHPROR3 dimensions 145 x 95 x 34

x2 fused spur and backbox = £10