Compact USB-C 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.

Short description

The Pill by Shelly is a compact multi-purpose low-voltage Wi-Fi & Bluetooth device, powered by only 5V via USB-C. The small form factor allows it to fit conveniently into any space-constraint environment.

The device is ready to use for Temperature monitoring with Plug and play compatibility with external Temperature sensors (DS18B20) or Temperature & Humidity (DHT22). Additionally, supporting wide variety of digital or analog sensors and low-voltage actuators with external peripheral addons and configurable peripheral modes.

Main features

• Compact design
• USB-C powered (5V)
• Dual connectivity (WiFi & Bluetooth)
• Plug and play: Temperature monitoring (DS18B20/DHT22)
• Advanced peripheral modes – Digital Input/Output; Analog input (Voltage meter);
• External Peripheral Add-ons: SSR Dual-channel, Analog Voltage measurement (0-30V)
• Shelly Gen3 capabilities (Local actions, Schedules, Scripting, Virtual components)
• Bluetooth Gateway for Shelly BLU devices
• 3rd party integrations-ready (MQTT, WebSocket, HTTP)

Peripheral modes

• Temperature (DS18B20) – Supporting up to 5 x Temperature probes (DS18B20); + optional 2 Digital IO
• Temperature & Humidity – 1x Temperature & Humidity sensor DHT22 + optional 2 Digital IO
• Analog Input – Analog sensor input (voltmeter) + optional Digital IO. Measured Voltages: 0-2.5 V (default); external Add-on for 0-30V
• Digital Input/Output – configurable for up to 3x Inputs/Outputs ; Digital IO: 3.3 V Logic Levels; Digital input: Active Low (default).
• Solid State Relay Add-on – Peripheral Addon with 2x channels galvanic-isolated outputs (max 30 V / 300 mA) + optional Digitial IO

* Note: Digital I/O can be combined with all modes and setup independently as Input or Output

Use cases

• Water Temperature Monitoring
  Track temperature of pools, aquariums, water tanks and reservoirs with simultaneous monitoring of up to five temperature points, using external temperature sensor probes (DS18B20)
• Temperature and Humidity Monitoring
  Monitor temperature and humidity in a room, server cabinets, greenhouse, warehouses or other areas where keeping optimal environment condition is necessary, with the supported external sensor DHT22
• Digital Sensors Readings
  Connect simple digital sensors like door reed, motion, water state sensor to your home automation system
• DC Voltage monitoring – external Add-on available
  Monitor DC voltages up to 30 V with the external Analog 0-30 V Add-on, suitable for tracking voltage across various battery systems (3.7 V, 12 V, 24 V) or other DC power lines.
• Analog Sensor measurements – external Add-on available
  Analog sensor voltage measuring for popular hobby & industrial analog sensors with the available Analog 0-30 V Add-on
• Control DC Loads – external Add-on available
  Dual-channel control for small DC Loads up to 30 V / 300 mA like led indicators, small fans, solenoids, valves and etc. with additionally available external SSR Add-on
• External Systems Control
  Available Digital Input/Outputs allow switching and reading state of external controllers and systems (3.3V logic level). The optionally available SSR Add-on allows triggering inputs of external controllers (max 30 V / 300 mA).

Main applications

• Residential
• University/college
• Hobby

Integrations

…

Simplified internal schematics

Device electrical interfaces

Power supply

• USB-C power supply: +5 V⎓

Add-on interface

• DC Power Supply: +5 V⎓
• Input/Output 1 – Configurable:
  • 1-Wire (DS18B20, DHT22)
  • Digital Input
  • Digital Output
  • Analog Input (Voltmeter)
• Input/Output 2 – Configurable:
  • Digital Input
  • Digital Output
• Input/Output 3 – Configurable:
  • Digital Input
  • Digital Output
• GND

Connectivity and protocols

• Wi-Fi
• Bluetooth

User interface

Inputs

• One (Control) button
  • Press and hold for 5 seconds to enable Device access point and Bluetooth connection.
  • Press and hold for 10 seconds to factory reset the Device.

Outputs

• LED (monocolor) indication
  • AP (Access Point) enabled and Wi-Fi disabled:
    1 second ON / 1 second OFF
  • Wi-Fi enabled, but not connected to a Wi-Fi network:
    1 second ON / 3 seconds OFF
  • Connected to a Wi-Fi network:
    Constantly ON
  • Cloud is enabled, but not connected:
    1 second ON /5 seconds OFF
  • Connected to Shelly Cloud:
    Constantly ON
  • OTA (Over the Air Update):
    ½ sec ON / ½ second OFF
  • Button pressed and held for 5 seconds:
    ½ second ON / ½ second OFF
  • Button pressed and held for 10 seconds:
    ¼ second ON / ¼ second OFF

The list above starts with the initial device status and the lowest priority. Every next state cancels the previous one.

Specifications