DL06 CPU, 20 DC in / 16 Relay out, requires external 12-24 VDC power. 14.8k words total (7679 words ladder - flash, 7488 words V-memory), RLL/RLLPLUS programming (DirectSOFT32 Version 4.0 or higher), two built-in RS-232C communication ports. Secondary communications port supports RS-232C/RS-422/RS-485, DirectNET Master/Slave, MODBUS RTU, Master/Slave, and ASCII In/Out. Inputs: 20 DC inputs, 12-24 VDC current sinking/sourcing, 5 isolated commons (4 inputs per common). First 4 inputs are configurable in one of several high-speed I/O features such as 7kHz counter input, pulse catch input, or interrupt input. Outputs: 16 Relay outputs, 6-27 VDC, 6-240 VAC, 2A/point max., 4 isolated commons (4 points per common). Four option slots available for I/O or communication modules.