Shelly Pro 4PM Smart Relay
DIN-rail 4-channel smart relay with per-channel power metering, 16A per channel and a built-in screen — no separate energy meter needed.
KSh 9,800- Channels
- 4, independently switched
- Max current
- 16A per channel, 40A total
- Metering
- Per-channel voltage, current, and power
- Display
- 1.8" colour LCD with control buttons
- Connectivity
- Ethernet (RJ45), Wi-Fi 802.11 b/g/n, Bluetooth 4.2
- Wi-Fi range
- Up to 30m indoors, 50m outdoors
- Integration
- Shelly app, Home Assistant, MQTT, REST API, Alexa, Google Home
- Mounting
- DIN rail, screw terminals
- Dimensions
- 96 x 53 x 59mm
- Power input
- 110-240V AC
- Secure M-Pesa payment via KCB Buni, a licensed bank payment gateway
- Real order tracking — email updates at every stage, from placed to delivered
- A real Mombasa business — Makadara Road, not a drop-shipper
The Pro 4PM mounts straight onto a standard DIN rail alongside the breakers it's replacing manual control for — four independent relay channels, each rated 16A (40A combined), each with its own voltage/current/power metering built in rather than needing a separate meter wired in alongside it. The 1.8-inch colour screen on the front shows live wattage per channel and lets someone toggle a circuit by hand at the panel without opening an app, which matters the moment a network drops and "turn it off from my phone" stops being an option.
Connectivity is LAN, Wi-Fi, and Bluetooth together rather than a single point of failure — wire it to the network for the most reliable link and it still falls back to Wi-Fi, with Bluetooth for local setup and pairing. It speaks the Shelly Gen2 API directly (local HTTP, MQTT, or the cloud app), and integrates natively with Home Assistant for anyone building out a fuller automation setup rather than controlling it standalone.
Built for exactly the job of watching and switching a handful of fixed circuits — water heaters, pumps, outdoor lighting, HVAC contactors — from a panel, with the metering to actually show what each one is costing to run, not just an on/off toggle bolted onto a breaker.
