Automation and Control

Product Price
RS485 Master (Controller) The RS485 MASTER is an isolated USB to RS485 converter. It can communicate serially over a 2 wire RS485 network to a maximum of... $62.70
Super4 RS485 Relay Module Super4 RS485 Relay Module The SUPER4 RS485 Module is a relay control board containing 4 mechanical SPDT (Single Pole Double Throw) power relays. The module... $59.95
PowerSwitch Tail 240 Kit Switch relays from your microcontroller easily with the PowerSwitch Tail 240 Kit! Features Kit, assembly and soldering required... $39.95
2 Channel USB Relay Module 2 Channel USB Relay Module URMC2 2 Channel USB Relay Module is great for controlling your devices through USB without any USB protocol knowledge. This... $35.95
Grove - SPDT Relay (30A) Grove - SPDT Relay (30A) The SPDT Relay(30A) is a high quality Single Pole Double Throw Relay(SPDT).The Relay consist of a coil, 1 common terminal, 1... $13.95
Beefcake Relay Control Kit  Beefcake Relay Control Kit Your 5 volt system can wield great power with this big beefy relay board. How does 20 amps at 220VAC sound? The Beefcake Relay... $11.95
Pololu Basic SPDT Relay Carrier with 5VDC Relay (Partial Kit) The Pololu basic relay carrier modules allow simple control of a single-pole, double-throw (SPDT) switch from low-voltage, low-... $6.95