5-Terminal Add-on
Device image(s)

Device identification
Device name: 5-Terminal Add-on (Accessory for The Pill by Shelly)
Device model: N/A
Short description
Versatile addon, exposing The Pill hardware capabilities. Providing terminals for 3 Input/Outputs (3.3V logic-levels) and 5V power with GND reference, the Add-on makes The Pill ready to use for logic-levels Digital Input / Digital outputs, Analog input (range 0-2.5V) or Temperature Sensors (DS18B20, DHT22).
Device electrical interfaces
Inputs
1 multi-purpose Input/Output: configurable for sensors (DS18B20, DHT22), Analog input (0-2.5 V) or Digital Input/Output - IO1
2 Digital Input/Outputs (logic-level 3.3 V) - IO2, IO3
Power
Optional Power terminals - 5V, GND
Add-on interface
Add-on Interface connector for The Pill by Shelly
Detailed inputs and outputs description
Symbol |
Description |
Usage |
|---|---|---|
5V |
5V Power |
Power output for connected sensors or 5V Power for The Pill |
IO1 |
Input/Output (logic-level 3.3V) |
Configurable for: DS18B20, DHT22, Analog Input (0-2.5V), Digital Input or Digital Output |
IO2 |
Input/Output (logic-level 3.3V) |
Configurable for: Digital Input or Digital Output |
IO3 |
Input/Output (logic-level 3.3V) |
Configurable for: Digital Input or Digital Output |
GND |
Ground |
Ground for reference for connected sensors or 0V for Power supply for The Pill |
Specifications
Physical | |
Size (HxWxD): |
44 mm x 23 mm x 10mm |
Weight: |
23 g |
Cable length: |
24 cm |
Wire colors: |
Black |
Shell color: |
black |
Environmental | |
Ambient working temperature: |
0 to 40 °C / 32 to 105°F |
Storage temperature: |
-20°C to 40°C / -5°F to 105°F |
Humidity: |
30 % to 70 % RH |
Max. altitude: |
2000 m / 6562 ft |
Basic wiring diagrams

Declaration of conformity
Shelly 5-Terminal Add-on multilingual EU declaration of conformity 249 2025-12-08.pdf
Shelly 5-Terminal Add-on UKCA declaration of conformity 3032 2025-12-08.pdf