SSR Add-on
Device image(s)

Device identification
Device name: SSR Add-on (Accessory for The Pill by Shelly)
Device model: N/A
Short description
Dual-channel control of DC Loads up to 30V.
Controls two independent DC loads up to 30V/300mA per channel using galvanically isolated solid-state relays for enhanced usability.
Requires: 5-Terminal Add-on for connection with The Pill
Main feature
Isolate and control DC loads: Use to control two separate DC Loads, max 30V / 300 mA each.
Device electrical interfaces
Inputs
1 Configurable Digital Input/Output (logic-level 3.3V) - IO3
Outputs
2 potential-free contacts solid-state relay outputs - LOAD1 and LOAD2
Power
Optional Power terminals - 5V, GND
Addon interface
Interface connector for 5-Terminal Add-on for connection with The Pill
Detailed inputs and outputs description

Symbol | Description | Usage |
|---|---|---|
LOAD1 | Channel 1 output | max. 30 V⎓ / 300 mA |
LOAD2 | Channel 2 output | max. 30 V⎓ / 300 mA |
GND | Ground | Reference ground for connected sensors or power supply |
IO3 | Input/Output (logic-level 3.3V) | Configurable for: Digital Input or Digital Output |
5V | 5V Power | Power output for connected peripheral or 5V Power for The Pill |
Specifications
Physical | |
Size (HxWxD): | 36 mm x 31mm x 11.5mm |
Weight: | 12 g |
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 |
Electrical | |
Power consumption: | < 0.6 W |
Max. switching voltage: | 30 V⎓ |
Max. switching current: | 300 mA |
Basic wiring diagrams

Declaration of conformity
Shelly SSR Add-on UKCA declaration of conformity 3032 2025-12-08.pdf
Shelly SSR Add-on multilingual EU declaration of conformity 250 2025-12-08.pdf