We will be attending Prototype Rails on January 6-8, 2022, in Cocoa Beach, FL. If you’re in the area, or already planning to attend, please take in some great clinics and stop by our tables and say hi. Hope to see you there! Note: Shipping of orders received Jan 5-17 may be delayed. Normal operations should resume Jan 18.

Input / Output

16-Channel I2C Relay Board Driver

16-Channel I2C Relay Board Driver

The I2C-RELAY16 is designed to piggyback on commonly available, Chinese-made, boards with 16 SPDT re..

$20.00

40-Channel I2C Digital I/O Expander

40-Channel I2C Digital I/O Expander

The I2C-XIO is a 40-channel digital I/O expander with an I2C interface, based on the NXP PCA9698.&nb..

$70.00

Dual Channel Optoisolator

Dual Channel Optoisolator

Used for providing isolation between a variety of control systems, such as DCC stationary decoders a..

$5.00

Qwiic-Compatible 16-Channel I2C Relay Board Driver

Qwiic-Compatible 16-Channel I2C Relay Board Driver

The I2C-RELAY16-QWIIC is a Qwiic-compatible relay driver board designed to piggyback on commonly ava..

$20.00

Single SPDT Relay Module - 12V Coil

Single SPDT Relay Module - 12V Coil

Single SPDT relay for controlling higher-power loads.  12V coil voltage.Input ConnectionsDC+&nb..

$9.00

Single SPDT Relay Module - 5V Coil

Single SPDT Relay Module - 5V Coil

Single SPDT relay for controlling higher-power loads.  5V coil voltage.Input ConnectionsDC+&nbs..

$9.00

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