The Pill by Shelly

Device identification

• Device name: The Pill by Shelly

• Device model: S3SN-0U53X

• Device SSID: ShellyPill-XXXXXXXXXXXXXX

• Bluetooth ID: 0x1829

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

…

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.

What are the differences between the different generations of Shelly products?

Each new generation adds more power, memory, and features:

Gen 1 offers basic control;

Gen 2 (Plus Series, Mini Series, Pro Series) adds Bluetooth, scripting, and better security;

Gen 3 improves performance, adds Matter (starting from firmware version 1.6.0 or newer) and advanced monitoring;

Gen 4 offers multi-protocol connectivity, featuring Wi-Fi 6, Bluetooth, Zigbee, and Matter.

Can I control the device via Bluetooth?

No, the protocol is used only for device inclusion, allowing for quick and easy setup through the Shelly Smart Control app.

For bluetooth control it is required to have another Bluetooth device such as Shelly BLU Button or Shelly BLU Motion to interact.

Additionally, Shelly devices can function as a BLE gateway, bridging Shelly BLU devices to your Wi-Fi network.

Is it possible to use the device without a hub?

Yes, Shelly devices (except for Wave devices) operate independently without the need for a hub. They connect directly to your Wi-Fi network, and you can control them via the Shelly Smart Control app, web interface, or through integrations with platforms like Google Home, Alexa, Home Assistant and Samsung SmartThings.