Description:
Solid State Relays, or SSRs, are devices designed to operate like standard relays but without mechanical motion. By simply providing a small voltage to the control side of the circuit, you can open or close a higher powered circuit on the load side.

The SSR Board is safe to use with sensitive control devices like microprocessors, and will not damage a Phidget device or your PC. Optoisolation between the control inputs and outputs of the SSR in the form of an LED paired with a set of optically-controlled MOSFETs provides protection from output to input. An on-board diode across the relay output protects the board from static electricity and surges from inductive loads.

Specifications:

• Relay Output Type: MOSFET
• Isolation Method: Photoelectric
• Dielectric Strength: 1.5 kV AC
• Control Voltage Min/Max: 3 V DC / 30 V DC
• Control Current: 50 mA
• Load Voltage Max (DC): 40 V DC
• Load Voltage Max (AC): 28 V AC
• Load Current Max (AC): 500 mA
• Load Current Max (DC): 500 mA
• Turn-on Time Max: 5 ms
• Turn-off Time Max: 0.2 ms
• Contact Resistance Max: 850 mΩ
• Recommended Wire Size (Load): 16 - 26 AWG
• Recommended Wire Size (Control): 16 - 26 AWG
• Operating Temperature Min/Max: -40 °C / 85 °C

Resources:
User Guide
Solid State Relay Primer