Main Categories Catalog Category 1 - Sensors Catalog Category 2 - Wireless Catalog Category 3 - Controllers Catalog Category 4 - Accessories Control Systems Monitoring & Data Logging Parts & Service Software All Products Item # 403 USB Converter Item # 406 I-P Transducer Item # 410 Transmitter Tester Item # 500 Solenoid Valve Body Item # 501 Solenoid Coil Item # 502 Solenoid Head/Tail Item # 504 Relay DPDT Item # 505 Relay Base DIN DPDT Item # 507 Power Supply 24v 30W Item # 508 Power supply 5v 25W