ount Power Requirements: 15VDC , 250 mA Inputs: 0-5VDC, 4-20 mA, digital switch (dry contact) 8 bit AID conversion I Outputs: 0-20mA or 0-5V VVT Expansion Board 0164097 . II II I II r asp • I I .L 1 • - Provides control for 4 VVT zones. Each zone has a thermostat with 10k thermistor, adjustable set