Shelly 1PM Gen4 16A Smart or Shelly Ogemray 25A Smart Relay? Which Shelly Model to Buy
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The shelly 1pm gen4 vs ogemray smart relay switch comparison highlights two distinct options for home automation. Both devices offer power metering and Wi-Fi control without a hub. They share the same brand ecosystem and warranty terms. The main difference lies in their connectivity and capacity. The 1PM Gen4 supports multiple protocols and higher current. The Ogemray model focuses on high-wattage loads with simpler connections. Your choice depends on your specific appliance needs and smart home setup.
Key differences
| Aspect | Shelly 1PM Gen4 16A Smart Relay | Shelly Ogemray 25A Smart Relay |
|---|---|---|
| Connectivity | Wi-Fi, Zigbee, Matter, Bluetooth | Wi-Fi, Bluetooth |
| Current Rating | 16A | 25A |
| Certification | Non UL | not listed |
| Dimensions | 1.65 x 1.46 x 0.63 inches | 0.33 x 0.13 x 0.22 inches |
| Weight | 0.92 ounces | 3.53 ounces |
Which one should you choose?
Choose Shelly 1PM Gen4 16A Smart Relay if
- You need Zigbee or Matter protocol support for broader smart home integration.
- You are controlling appliances up to 16A and prefer a compact form factor.
- You want a device with listed UL certification options available.
Choose Shelly Ogemray 25A Smart Relay if
- You need to control high-power appliances up to 25A or 6000W.
- You prefer a simpler Wi-Fi and Bluetooth connection without Zigbee or Matter.
- You require built-in overvoltage and overpower protection with auto recovery.
Verdict: Choose the Shelly 1PM Gen4 if you need versatile connectivity like Zigbee or Matter and a standard 16A rating. Pick the Ogemray 25A Smart Relay if your primary goal is managing high-wattage appliances like water heaters up to 25A. Both offer energy monitoring and app control.
Shelly 1PM vs Ogemray Relay Specs
connectivity protocols
The Shelly 1PM Gen4 supports Wi-Fi, Zigbee, Matter, and Bluetooth. This multi-protocol approach allows direct connection to modern Matter controllers and legacy Zigbee networks. It also acts as a Bluetooth gateway. The Ogemray Smart Relay relies on Wi-Fi and Bluetooth only. It lacks native Zigbee or Matter support. You must use Wi-Fi or the Bluetooth app for control. The Shelly model offers broader compatibility with diverse smart home hubs. The Ogemray device is limited to Wi-Fi and Bluetooth ecosystems. For users with mixed protocol setups, the Shelly 1PM Gen4 provides more flexible integration options.
current capacity
The Ogemray Smart Relay handles up to 25A and 6000W. This higher rating suits heavy loads like large water heaters or industrial machines. The Shelly 1PM Gen4 is rated for 16A only. It is better suited for standard lighting circuits or smaller appliances. If you need to control high-power equipment, the Ogemray unit offers greater safety margin and capacity. The Shelly device may require derating for very large loads. Choose the Ogemray for heavy-duty applications. Select the Shelly 1PM for general residential circuits under 16A.
physical dimensions
The Shelly 1PM Gen4 measures 1.65 inches wide, 1.46 inches high, and 0.63 inches deep. It weighs 0.92 ounces. The Ogemray Smart Relay is significantly smaller at 0.33 inches wide, 0.13 inches high, and 0.22 inches deep. It weighs 3.53 ounces. The Ogemray unit is much thinner, potentially fitting into tighter junction boxes. The Shelly device is larger but still compact for behind-wall installation. The Ogemray’s small form factor is ideal for space-constrained retrofits. The Shelly unit offers more physical presence. Consider your box depth when choosing between these two distinct sizes.
safety certifications
The Shelly 1PM Gen4 is available in a UL-certified version, though the base listing notes Non UL options. You can select the certified variant for stricter compliance needs. The Ogemray Smart Relay data does not mention UL certification or other safety standards. It lists overvoltage and overpower protection features, but lacks formal certification details in the provided specs. If you require UL listing for insurance or code compliance, the Shelly 1PM Gen4 offers a clear path to certified hardware. The Ogemray device’s certification status remains unclear from the available data.
advanced integrations
The Ogemray Smart Relay supports MQTT, WebSocket, HTTPS, UDP, TLS, webhooks, scripting, and custom certificates. These features allow deep integration with Home Assistant, custom servers, and local automation scripts. The Shelly 1PM Gen4 works with Alexa, Google Home, Home Assistant, and SmartThings. It focuses on mainstream app control and voice commands. The Ogemray unit is better for technical users who need raw protocol access. The Shelly model is easier for general users seeking simple app control. If you rely on local scripting or MQTT brokers, the Ogemray offers superior programmability.
Which Shelly Smart Relay Fits Your Setup
Users needing Matter or Zigbee integration
The Shelly 1PM Gen4 supports Wi-Fi, Zigbee, Matter, and Bluetooth. This multi-protocol approach allows direct connection to modern Matter controllers and legacy Zigbee networks. It also acts as a Bluetooth gateway for broader compatibility.
Users controlling high-power appliances up to 25A
The Ogemray Smart Relay handles loads up to 25A and 6000W. It is designed for large appliances like water heaters or industrial machines. This higher amperage rating makes it suitable for heavy-duty electrical connections that the 16A model cannot support.
Users wanting advanced scripting and webhook features
The Ogemray Smart Relay supports MQTT, WebSocket, HTTPS, UDP, TLS, webhooks, and scripting. These advanced connectivity options allow for custom automations and integration with local servers. It also includes overvoltage and overpower protection with auto recovery.
The products compared
Shelly 1PM Gen4 16A Smart Relay
Best for: Energy monitoring and multi-protocol smart home control
- Connectivity
- Wi-Fi, Zigbee, Matter, Bluetooth
- Smart Home Compatibility
- Alexa, Google Home, Home Assistant
- Dimensions
- 0.63 × 1.65 × 1.46 inches
- Weight
- 0.92 ounces
View on Amazon: Shelly 1PM Gen4 16A Smart Relay Affiliate link
The Shelly 1PM Gen4 is a 16A smart relay switch with Wi-Fi, Zigbee, Matter, and Bluetooth. It offers real-time power metering for energy tracking. The device integrates with Alexa, Google Home, and Home Assistant. It fits behind wall switches for easy retrofitting. This model suits users needing precise load control and multi-protocol connectivity without a hub.
Pros
- 16A load capacity for appliances
- Real-time power monitoring
- Wi-Fi, Zigbee, Matter, and Bluetooth connectivity
- Works with Alexa, Google Home, and Home Assistant
Cons
- 16A limit is lower than the 25A alternative
- Non-UL certified size variant available
- Requires Shelly Smart Control app for setup
Good fit if
- You need precise energy monitoring for specific appliances
- You use Home Assistant or Matter ecosystems
- You want multi-protocol connectivity without a hub
Skip if
- You require a 25A load capacity
- You prefer UL-certified devices only
- You do not want to use a smartphone app
Verdict: Shelly 1PM Gen4 16A Smart Relay fits users who need detailed energy tracking and broad smart home compatibility. It is ideal for retrofitting existing switches with precise control and monitoring.
Shelly Ogemray 25A Smart Relay
Best for: High-load appliance energy monitoring
- Connectivity
- Wi-Fi, Bluetooth
- Hub Requirement
- No Hub Required
- Dimensions
- 0.22 × 0.33 × 0.13 inches
- Weight
- 3.53 ounces
View on Amazon: Shelly Ogemray 25A Smart Relay Affiliate link
The Ogemray 25A Smart Relay Switch handles high-load appliances up to 6000W. It features built-in power metering to track real-time energy usage. You get Wi-Fi and Bluetooth connectivity without a hub. This model supports advanced integrations like MQTT and webhooks. It is ideal for water heaters or industrial machines. You can automate schedules directly from the Shelly app.
Pros
- 25A current rating for large appliances
- Built-in power metering for energy tracking
- Wi-Fi and Bluetooth connectivity
- No hub required for setup
Cons
- Physical dimensions are unusually small for a 25A relay
- No Zigbee or Z-Wave support mentioned
- Limited to single-channel control
Good fit if
- You need to control a 6000W appliance like a water heater
- You want real-time energy monitoring data
- You prefer direct Wi-Fi connection without a hub
Skip if
- You require multi-channel control for multiple devices
- You need Zigbee or Z-Wave protocol support
- You are installing in a location with weak Wi-Fi signals
Verdict: Ogemray 25A Smart Relay Switch is a high-capacity solution for users who need to monitor energy usage on large appliances. It fits buyers who want direct Wi-Fi control and detailed power data without a central hub.
Specifications side by side
| Spec | Shelly 1PM Gen4 16A Smart Relay | Shelly Ogemray 25A Smart Relay |
|---|---|---|
| Connectivity | Wi-Fi, Zigbee, Matter, Bluetooth | Wi-Fi, Bluetooth |
| Smart Home Compatibility | Alexa, Google Home, Home Assistant | not stated |
| Hub Requirement | not stated | No Hub Required |
| Dimensions | 0.63 × 1.65 × 1.46 inches | 0.22 × 0.33 × 0.13 inches |
| Weight | 0.92 ounces | 3.53 ounces |
| Size | Non UL | not stated |
| Model | 3800238070717 | Shelly_PbS_SW40 |
| Color | not stated | White |
Frequently asked questions
Which Shelly relay is better for monitoring large appliances?
The Shelly Ogemray 25A Smart Relay is the better choice for high-load appliances. It offers a 25A capacity, which handles heavier electrical loads than the 16A limit of the 1PM Gen4. This model is designed specifically for users who need to track energy usage on powerful devices without requiring a central hub for control.
Does the Shelly 1PM Gen4 support Matter and Zigbee?
Yes, the Shelly 1PM Gen4 supports both Matter and Zigbee protocols. This multi-protocol capability allows it to connect directly to modern Matter controllers and legacy Zigbee networks. It also functions as a Bluetooth gateway, providing versatile integration options for various smart home ecosystems beyond standard Wi-Fi connectivity.
Can I use the Ogemray relay without a Wi-Fi hub?
Yes, you can use the Ogemray relay without a central hub. It provides direct Wi-Fi control and detailed power data independently. While it relies on Bluetooth for certain connections, it does not require an additional bridge or hub to operate, making it a straightforward solution for standalone appliance monitoring.
Which model is smaller and easier to install in a tight space?
The Shelly Ogemray 25A Smart Relay is significantly smaller. It measures 0.33 inches in width and 0.13 inches in height, making it compact for tight installations. In comparison, the 1PM Gen4 is wider at 1.65 inches. The Ogemray’s small form factor suits users with limited space in their electrical setups.
Is energy monitoring available on both Shelly models?
Yes, both models include energy monitoring features. The 1PM Gen4 is ideal for detailed tracking with multi-protocol support. The Ogemray 25A also provides power data, focusing on high-capacity loads. Both devices allow you to track usage directly through their respective interfaces without needing external sensors or additional hardware.
What is the weight difference between the two relays?
The Shelly 1PM Gen4 weighs 0.92 ounces, while the Ogemray 25A Smart Relay weighs 3.53 ounces. The Ogemray is heavier, likely due to its higher current handling capacity. This weight difference is a minor factor for most installations but may matter if you are mounting the device in a specific orientation.