SONOFF

SONOFF SPM-4Relays Stackable Four-Channel Metering Module

Name: SONOFF SPM-4Relays Stackable Four-Channel Metering Module
Brand: SONOFF

Four-channel metering relayPower meteringRS-485

Retailer listing · 1 offer collected

ITEAD / SONOFF$59.90

Listed equipment price · lowest price out of stock

Out of stock when checkedView retailer offer Price observation: 2026-11-07 · USD

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Retailer price observations for SONOFF SPM-4Relays Stackable Four-Channel Metering Module
Retailer	Listed price & quantity	Availability & condition	Observed	Shop
ITEAD / SONOFFStore policies & support	$59.90Single item	Out of stock when checkedNew	2026-11-07Source date 2026-11-07	View offer

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Published specifications and their source
Specification	Listed value	Source
Device function	Four-channel metering relay	Manufacturer documentationReviewed 2026-11-07
Device communication protocols	RS-485	Manufacturer documentationReviewed 2026-11-07
Electrical power / energy metering	YesPower/energy metering is explicitly part of this named model. Controller or sensor accessories, supply voltage and switched-load ratings must be checked separately.	Manufacturer documentationReviewed 2026-11-07
Stated compatible equipment	SPM-Main	Manufacturer documentationReviewed 2026-11-07
Separate gateway hub required for basic functions	YesRequires SPM-Main controller sold separately.	Manufacturer documentationReviewed 2026-11-07
Rated current (A)	20Per isolated channel as stated by manufacturer; do not infer80Aaggregate service capability.	Manufacturer documentationReviewed 2026-11-07
Control channels	4	Manufacturer documentationReviewed 2026-11-07