Milesight WS501 - Smart Wall Switch (1-Gang)
Milesight WS501 - Smart Wall Switch (1-Gang)
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The Milesight WS501-868M is a single-gang LoRaWAN® wall switch for local and remote on/off control of lights and appliances via a high-reliability relay, directly replacing a traditional wall switch. It measures voltage, current, power factor, active power and energy, and offers overcurrent protection, delay switch, switch lock and multicast for bulk control.
It runs LoRaWAN® Class C with Milesight D2D for gateway-less control and can be triggered by other Milesight sensors. Mains-powered (100–250 VAC) with a 3-wire connection (neutral required), it fits a standard 86 mm wall box and is configured via NFC.
Before you install
- Setup: via the Milesight ToolBox app (NFC).
- Power: hard-wired to mains (100–250 V), requires a neutral wire — wired by an electrician.
- Control: switches one lighting circuit; remotely via a LoRaWAN gateway (sold separately) or directly via Milesight D2D without a gateway; energy metering, indoor only.
Parameters
| Wireless Protocol | LoRaWAN®, Class C (OTAA/ABP), Milesight D2D support |
| Frequency | EU868, max. 16 dBm |
| Function | 1-gang on/off control of lights/appliances; delay switch, switch lock, multicast |
| Electrical | 100–250 VAC, 50–60 Hz; 1 gang; 10 A resistive / 5 A inductive; max 1000 W/gang; 3-wire, neutral required |
| Energy Metering | Voltage, current, power factor, active power, energy (kWh); accuracy ±3 % |
| Power | Mains (100–250 VAC) |
| Configuration | NFC via Mobile App, Downlink |
| Enclosure | PC (UL94 V0), IP20 |
| Dimensions | 86 × 86 × 40 mm |
| Weight | 94 g |
| Mounting | Standard 86 mm square wall box |
| Certifications | CE, FCC, RoHS |




