WS558-Switch – 8-circuit LoRaWAN passive relay module – Milesight
General Description
The Milesight WS558-Switch is a LoRaWAN®-enabled 8-channel passive relay module designed to control devices remotely or locally. It is ideal for scenarios where load power is independent of the module, while also providing scheduling, protection, and direct device-to-device communication via Milesight D2D.
Targeted Applications
- Control of equipment with independent power supply
- Building and factory automation systems
- Intelligent management of lighting or ventilation
- Triggering of relays or contactors
- Monitoring and remote control of electrical circuits
Highlights
- 8 passive relay outputs for flexible integration
- Local button control and remote control via LoRaWAN®
- Advanced features: multicast, remote scheduling
- Built-in overcurrent protection
- Compatibility with Milesight D2D for low latency
- Simple setup via NFC or USB Type-C port
- Easy installation on wall or DIN rail
Technical Specifications
Electric |
Type of circuit |
Passive relays (switch type) |
Input voltage |
100~250 VAC, 50~60 Hz |
Passive outputs |
8 passive relays |
Capacitive & inductive load |
Max 5 A per relay |
Resistive load |
Max 10 A per relay |
Electrical measurements |
Not available |
Wireless transmission |
Protocol |
LoRaWAN®, Milesight D2D |
Supported frequencies |
CN470 / IN865 / RU864 / EU868 / US915 / AU915 / KR920 / AS923-1/2/3/4 |
Transmit power |
16 dBm (868 MHz) / 22 dBm (915 MHz) / 19 dBm (470 MHz) |
Sensitivity |
-137 dBm |
Fashion |
OTAA / ABP – Class C |
Software |
Configuration |
NFC, USB Type-C or Downlink |
Relay control |
Local by button or LoRaWAN remote control |
Advanced Features |
Multicast, remote scheduling, overcurrent protection, Milesight D2D Agent |
Physical characteristics |
Color / Material |
Cream white, ABS |
Operating temperature |
-20°C to +60°C |
Relative humidity |
≤ 95% (non-condensing) |
Dimensions |
145 × 90 × 40 mm |
Facility |
Wall or DIN rail mounting |
Interfaces and Connectors
The WS558-Switch features an NFC interface for wireless configuration via the Milesight ToolBox app, as well as a USB Type-C port for wired configuration. It supports LoRaWAN® downlink commands and direct D2D communication for minimal latency.
Pack Contents
- 1 × Milesight WS558-Switch Passive Relay Module
- 1 × Wall / DIN Rail Mounting Kit
- 1 × Quick Start Guide
- 1 × Warranty Card