SDM-CD16AC 16-Channel AC/DC Relay Controller. SDM-CD16S adds capability to a datalogger by controlling DC devices that have a relatively high-powered load, such as solenoids, solenoid valves, DC motors, stepper motors, lights, horns, heaters, and fans.

• Allows the data logger to automatically turn devices on or off when a threshold (for example, temperature or water depth) has been reached
• Provides a manual override
• Includes LEDs for a visual indicator of active outputs