Device profile · Specifications & compatibility
Shelly 1 Gen4
Shelly · Relays · Model S4SW-001X16EU
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- Shelly 1 Gen4 lists Relay Channels: 1; Resistive Maximum Load Current: 16A; Wet Contact Mode.
- Check whether the outputs are independently controlled and confirm the rating for each channel.
Browse more from Shelly or explore all relays in our catalog.
- Recorded year
- 2025
- Recorded warranty
- 3 years
- Dimensions
- 37 x 42 x 16 mm
- Weight
- 26g
The details that shape your choice
Shelly 1 Gen4 Quick Features
Start with these specifications, then check the full details and conditions below.
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From specification to decision
Shelly 1 Gen4: Capabilities And Limitations
Based on listed specifications, not hands-on testing. Manufacturer sources are linked where checked.
What it offers
Matter support is listed, making it a candidate for a compatible Matter setup after model and feature checks. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter details →A Home Assistant integration is listed, providing an integration path to verify for the exact model. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant details →Apple Home support is listed as an integration option. Check the model, firmware, exposed controls and any additional hardware requirements.
View Apple Home details →
What to consider
No specific limitation is established here. Check installation requirements and compatibility before choosing.
Still needs verification
Confirm these details if they matter to your setup.
Questions About Shelly 1 Gen4
How many relay channels does Shelly 1 Gen4 have?
Relay Channels: 1. Check whether the outputs are independently controlled and confirm the rating for each channel.
View Relay Channels specifications →What is the resistive-load current of Shelly 1 Gen4?
Resistive Maximum Load Current: 16A. Verify the actual load type, voltage and installation requirements before selecting the device.
View Resistive Maximum Load Current specifications →Does Shelly 1 Gen4 support wet-contact operation?
Yes, according to the listed specifications. Powered contacts and dry contacts serve different wiring needs. Follow the exact equipment and relay instructions.
View Wet Contact Mode specifications →Does Shelly 1 Gen4 support Matter?
Yes, according to the listed specifications. Verify the exact device type, firmware and features exposed in your chosen platform. Matter support is not proof of feature parity.
View Matter specifications →Does Shelly 1 Gen4 work with Home Assistant?
Yes, according to the listed specifications. Check the exact integration and firmware. A catalog integration label does not establish local control, official support or available entities.
View Home Assistant specifications →Explore the full picture
Shelly 1 Gen4 Specifications
Recorded catalog values. Expand notes for qualifications; unknown values are not treated as missing features.
0 of 46 fields matched to manufacturer documentation. Source checks apply only to the named model and stated scope. Other fields remain catalog data. How we verify specifications →
Features12 fields
| Relay Channels | 1 |
|---|---|
| Energy Monitoring | NoDetails & conditionsNo power metering: its only sensor is the internal temperature sensor (the 1PM Gen4 is the metering model) |
| Power Off Memory | Not recorded |
| Wireless Switch Mode | Not recorded |
| Dry Contact Mode | Yes |
| Wet Contact Mode | Yes |
| Interlock Mode | No |
| Din Rail Mount | No |
| On Off Button | No |
| Automations | Yes |
| Zigbee Router | Yes |
| Ota | Yes |
Power17 fields
| Ac Power | Yes |
|---|---|
| Ac Load Voltage | 110-240 V |
| Resistive Load | Yes |
| Resistive Maximum Load Power | Not recorded |
| Resistive Maximum Load Current | 16A |
| Inductive Load | Yes |
| Inductive Maximum Load Power | Not recorded |
| Inductive Maximum Load Current | Not recorded |
| Capacitive Load | Yes |
| Capacitive Maximum Load Power | Not recorded |
| Capacitive Maximum Load Current | Not recorded |
| Dc Power | Yes |
| Dc Maximum Load Power | Not recorded |
| Dc Maximum Load Current | Not recorded |
| Dc Load Voltage | 12V / 24-48V |
| Neutral Required | Yes |
| Idle Consumption | 1W |
Connectivity7 fields
| 2.4 GHz Wi-Fi | YesDetails & conditionsWi-Fi (802.11 b/g/n/ax) |
|---|---|
| 5 GHz Wi-Fi | No |
| Bluetooth | YesDetails & conditionsBluetooth 5.0 |
| Z Wave | No |
| Zigbee | Zigbee Hub required |
| Thread | No |
| Radio Frequency | No |
Integrations6 fields
| Google Home | Yes |
|---|---|
| Alexa | Yes |
| Apple Home | Yes |
| SmartThings | Yes |
| Home Assistant | Yes |
| Matter | Yes |
Safety Features4 fields
| Overheating Protection | Yes |
|---|---|
| Overvoltage Protection | No |
| Overcurrent Protection | No |
| Overpower Protection | No |
How this device compares
Shelly 1 Gen4 vs Other Similar Models
Statistical context from 48 relays in this catalog. These figures describe our recorded data, not independent measurements.
Recorded feature coverage
Dc Power: 15 of 43 known answers are Yes
Power: 35% among explicit Yes/No answers; 5 of 48 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
Dry Contact Mode: 15 of 43 known answers are Yes
Features: 35% among explicit Yes/No answers; 5 of 48 devices have no resolved answer. Check the specifications for this model’s conditions.
Recorded feature coverage
2.4 GHz Wi-Fi: 24 of 48 known answers are Yes
Connectivity: 50% among explicit Yes/No answers; 0 of 48 devices have no resolved answer. Check the specifications for this model’s conditions.
Brand representation in this directory
17 of 48 models are from Shelly
Counts relays listed here, not sales or market share. Catalog inclusion does not imply a recommendation.
Side-by-side specification comparison
Compare Shelly 1 Gen4 vs Similar Relays
See how Shelly 1 Gen4 stacks up against other relays in this catalog. Compare specifications, compatibility and pricing.
Catalog specifications have not all been independently checked against manufacturer sources. Read our data and evidence methodology.