The Pill by Shelly is an ultra-compact USB-C (5V) powered Wi-Fi and Bluetooth device that connects to various sensors and low-voltage peripherals for monitoring and control of temperature, humidity, voltage, and digital I/O.
It includes Shelly Gen3 functionality, acts as a gateway for Shelly BLU devices, and works with popular Home Automation systems such as Home Assistant. No more installation hassle, just plug it in and let it work.
The Pill by Shelly adds control and automation where others can't fit, linking your sensors and peripherals with smart minimalistic precision. Powered by USB-C (cable required) and designed for low-voltage use, it brings automation, monitoring, and Bluetooth Gateway functionality in the smallest possible form.
It supports a wide variety of digital or analog sensors and low-voltage actuators with external peripheral addons and configurable peripheral modes, or use a plug and play external temperature sensor (DS18B20) or temperature & humidity sensor (DHT22). The Pill uses Micro-USB on one end for accessory/sensor interfacing and USB-C for power in, and comes with a micro-USB to 3.5mm jack cable for interfacing with 3.5mm accessories. A terminal-block accessory is required for interfacing with your own sensors.
Temperature & Humidity - Temperature & Humidity sensor DHT22 + optional 2 Digital IO
Requires terminal block accessory
Analog Input - Analog sensor input (voltmeter) + optional Digital IO
Measured Voltages: 0-2.5 V (default)
Use external add-on for 0-30V
Requires terminal block accessory
Digital Input/Output - configurable for up to 3x Inputs/Outputs
Digital IO: 3.3 V Logic Levels
Digital input: Active Low (default)
Requires terminal block accessory
Solid State Relay Add-on - Peripheral add-on (coming soon!) with 2x channels galvanic-isolated outputs (max 30 V / 300 mA) + optional Digital IO
*Digital I/O can be combined with all modes and setup independently as Input or Output
Key features include:
Extremely small and lightweight device - mount it inside enclosures, behind panels, or integrate it within other devices
Multiple input/output types support - take advantage of up to three independently configurable logic-level inputs or outputs and voltage ranges for versatile integration
Analog Sensors Monitoring - connect 0-5V analog sensors for accurate readings of light, soil moisture, and other environmental parameters to enhance automation capabilities with an external add-on
Bridging Peripherals to Home Automations - enable The Pill by Shelly to connect peripheral devices to your automation platform and expand system behaviour and control. Works with Home Assistant!
Plug-and-Play Temperature Monitoring - simplify temperature and humidity sensing for DS18B20 and DHT22 sensors without complex wiring or hubs
Acts as a Bluetooth Gateway - use The Pill by Shelly as additional gateway device for all Shelly BLU series devices
DC Loads Control (accessory required) - Control two independent DC loads up to 30V/300mA using the external SSR add-on for reliable low-voltage switching in automation setups
Peripheral Add-on Compatibility - expand The Pill by Shelly’s integration and control capabilities with peripheral add-ons for digital inputs, outputs, and analog sensing
USB-C power design - save power and enable low-voltage environmental monitoring with a compact design suitable for always-on deployment
A versatile device - use it as a standalone solution or as part of a larger system on third-party platforms
Features
Dual connectivity: Wi-Fi and Bluetooth for versatile communication
USB-C powered for safe and easy 5 V installation in any environment
Built-in Bluetooth Gateway for nearby device communication
Shelly Gen3 functionality with local actions, scripting, and virtual components for full automation control
Sensor reader for temperature, humidity, and environmental data with cloud logging and statistics
Advanced automation and integration via MQTT, WebSocket, HTTP, and virtual devices
Expandable design through add-ons for digital I/O, analog sensing, and high-accuracy voltage measurement
Configurable peripheral modes supporting a broad range of external modules and extensions
High-accuracy analog measurement for reading DC voltages up to 30 V with the external add-on
Three configurable digital IOs for direct logic-level control and system interfacing
Specifications
Size (H x W x D)
26 x 19.95 x 8.5 mm
Weight
3 g
Shell material
Plastic
Shell colour
White
Ambient working temperature
-20 to 40 °C
Humidity
30% - 70% RH
Power supply
5 V⎓ (from USB-C port)
Power consumption
< 1 W
Input circuits ratings
Digital inputs triggering voltage
Active LOW; Trigger low: < 0.83 V Trigger high: > 2.48 V
Digital inputs max. voltage
3.3 V
Output circuits ratings
Max. switching voltage
3.3 V (logic-level)
Max. switching current
20 mA
Sensors, meters
Voltmeter (DC)
0 V - 2.5 V (Built-in) 0 V - 30 V (Requires external add-on)
Voltmeter accuracy
±(2% + 5d)
Internal-temperature sensor
No
External sensors supported
Single DHT22 Up to five DS18B20 (with optional splitter)
Wi-Fi
Protocol
802.11 b/g/n
RF band
2401 - 2483 MHz
Max. RF power
< 20 dBm
Range
Up to 30m indoors and 50m outdoors (Depends on local conditions)
Bluetooth
Protocol
BLE 4.2
RF band
2402 - 2480 MHz
Max. RF power
< 10 dBm
Range
Up to 10m indoors and 30m outdoors (Depends on local conditions)
