Optically-Isolated-In/Relay-Out Modules Require No PC

The Model WWP-IIRO-8 features a pair of intelligent, wireless 16-channel digital I/O units packaged in small NEMA4 enclosures that communicate directly with each other. Each unit contains eight Form C (SPDT) electromechanical relays and eight optically-isolated digital inputs. When an isolated input is toggled on one of the units it will cause the corresponding relay to switch on the other unit. No software or PC connection is required as the unit is completely self-contained and operates autonomously. The units can operate at distances up to seven miles line-of-sight via a 900-MHz wireless connection and up to 20 miles with an optional high-gain antenna. The eight isolated inputs can be driven by dc sources of 3V to 31V or ac sources at frequencies from 40 Hz to 10 kHz. Single-unit price for the WWP-IIRO-8 is $795. ACCES I/O PRODUCTS INC., San Diego, CA. (800) 326-1649.