Single Relay Board Features

Songle SRD-05VDC-SL-C Relay
Relay UL/CUL Rating: 10A @ 125V AC, 28V DC
Relay CCC/TUV Raiting: 10A @ 250V AC, 30V DC
Control high-power devices up to 10A with a simple high/low signal
Provides isolation between the microcontroller and the device being controlled
Screw terminals for relay connections
3-pin servo-style header for power/signal interface
LED indicator provides visual feedback
Voltage requirements: 5V DC (Relay Power), 3.3V to 5V DC (Input Signal)
Current requirements: ~85 mA (Relay Power)
Communication: Logic High/Low (3.3V to 5V DC)
Dimensions: 1.57 × 1.06 × 0.71 inches (4.0 × 2.7 × 1.8 cm)
Operating temperature: -13 to +158 °F (-25 to +70 °C)
Single Relay Board Resources

Single Relay Board User Manual
Songle SRD-05VDC-SL-C Relay Datasheet (this is the “Form C” relay)
Example Code for BASIC Stamp 2 (toggles relay every second)
Example Code for Propeller CPU (toggles relay every second)