---
title: Shelly 2PM Gen4 Two-Channel Smart Switch
date: 2025-10-13T05:35:33Z
modified: 2026-05-22T07:02:19Z
permalink: "https://tech.co.za/product/shelly-2pm-gen4-two-channel-smart-switch/"
type: product
status: publish
excerpt: "Multiprotocol connectivity: Choose from Zigbee, Bluetooth, Wi-Fi and Matter\\n2 channels on the same phase\\nPower metering on each channel"
wpid: 554672
product_brand:
  - Shelly
product_type:
  - simple
product_cat:
  - Smart Home
featured_image: "https://tech.co.za/wp-content/uploads/2025/10/SHELLY-2PM-GEN4a-1.png"
---

### A 2-channel smart switch for control of curtains, blinds, and shutters. Features power metering and multiprotocol support (Wi-Fi, Zigbee, Matter, Bluetooth).





- Multiprotocol connectivity: Choose from Zigbee, Bluetooth, Wi-Fi and Matter
- 2 channels on the same phase
- Power metering on each channel
- Cover (roller) control – Automate and adjust the position of roller shutters, blinds, curtains, awnings, bi-directional AC motors.
- Slats angle control – use with your venetian blinds and control the tilt position (angle) of slats to adjust the amount of light in a room.
- Apple Homekit support: Control connected devices using Apple Home app or Siri through Matter
- Perfect to retrofit behind existing switches and sockets
- Supports schedules, scenes and local actions
- Supports scripting, HTTPS, MQTTS, Inbound and Outbound Web Sockets
- Internal temperature sensor for overheating protection
- Wi-Fi & Zigbee range extender & Bluetooth gateway
- Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant, or your preferred automation platform.

![](https://shellysa.co.za/wp-content/uploads/2025/08/shelly-2pm-gen4_wiring_01.png)

Dual-channel switch mode, AC power supply![](https://shellysa.co.za/wp-content/uploads/2025/08/shelly-2pm-gen4_wiring_02.png)

Dual-channel switch mode, DC power supply![](https://shellysa.co.za/wp-content/uploads/2025/08/shelly-2pm-gen4_wiring_03.png)

Cover Mode

| **Terminals** | **Wires** |  |  |
| --- | --- | --- | --- |
| **O1, O2:** | Load circuit output terminals | **N:** | Neutral wire |
| **L:** | Live terminal (110-240 V~) | **L:** | Live wire (110-240 V~) |
| **S1, S2:** | Switch input terminals | **+:** | 24 V⎓ positive wire |
| **S1, S2** | Switch input terminals | **–** | 24 V⎓ positive wire |
| **+:** | 24V⎓ positive terminal |  |  |
| **Ʇ:** | 24V⎓ negative terminal |  |  |

### Specifications



| **Physical** |  |
| --- | --- |
| Size (HxWxD): | 37x42x16 ±0.5 mm / 1.46×1.65×0.63 ±0.02 inch |
| Weight: | 30 g / 1.06 oz |
| Screw terminals max torque: | 0.4 Nm / 3.5 lbin |
| Conductor cross section: | 0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules) |
| Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in |
| Mounting: | Wall box |
| Shell material: | Plastic |
| Shell color: | Black |
| Terminals color: | Grey (Mouse Grey) |
| **Environmental** |  |
| Ambient working temperature: | -20°C to 40°C / -5°F to 105°F |
| Humidity: | 30% to 70% RH |
| Max. altitude: | 2000 m / 6562 ft |
| **Electrical** |  |
| Power supply: | 110 – 240 V~ / 24 VDC ±10% |
| Power consumption: | < 1.4 W |
| External protection: | Tripping characteristic B or C, 16A max. rated current, min. 6 kA interrupting rating, energy limiting class 3 |
| **Output circuits ratings** |  |
| Max. switching voltage: | 240 V~ 30 V⎓ |
| Max. switching current AC: | 10 A (per channel), 16 A (total), 18 A (total peak) |
| Max. switching current DC: | 10 A |
| **Sensors, meters** |  |
| Voltmeter (AC): | Yes |
| Ammeter (AC): | Yes |
| Internal-temperature sensor: | Yes |
| **Radio** |  |
| **Wi-Fi** |  |
| Protocol: | 802.11 b/g/n/ax |
| RF band: | 2412 – 2472 МHz |
| Max. RF power: | < 20 dBm |
| Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) |
| **Bluetooth** |  |
| Protocol: | 5.0 |
| RF band: | 2402 – 2480 MHz |
| Max. RF power: | < 4 dBm |
| Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions) |
| **Zigbee** |  |
| Protocol: | 802.15.4 |
| RF bands: | 2400 to 2483.5 MHz |
| Max. RF power: | < 20 dBm |
| Range: | Up to 100 m / 328 ft indoors and 300 meters / 984 ft outdoors (Depends on local conditions) |
| **Microcontroller unit** |  |
| CPU: | ESP-Shelly-C68F |
| Flash: | 8MB |
| **Firmware capabilities** |  |
| Schedules: | 20 |
| Webhooks (URL actions): | 20 with 5 URLs per hook |
| Scripting: | Yes |
| MQTT: | Yes |