Item Type: Programmable Logic Controller Product Model: SK222XP 14R Digital Input: 8 Channels Digital Output: 6 Way Relay Battery: 1 x CR1220 40mAh, with built in battery. Analog Input: 2 channels, 0~10V or 0~20mA, input switchable. Analog Output: 1 channel, 0~10V or 0~20mA. 485 Interface: 1 Channel High Speed Pulse Input: 6 x 30K High Speed Pulse Output: Not Supported Expansion: Not expandable. Power Supply: 24V DC Note: Supports voltage and current analog input, switch through dip switch. Compatibility: Fully compatible with S7 programming software and instruction set. Resourceful: 8 digital inputs, 6 digital outputs, 2 analog proposed inputs with built in dip switches to set voltage or current input, 1 analog output with both voltage and current output. Bidirectional Input: Digital input port adopts bidirectional optocoupler internally, supporting NPN or PNP input. High Accuracy: The analog input adopts high accuracy AD and rail to rail op amp, which can realize low voltage recognition. Full Communication Port: 1 way PPI communication interface, supporting 9.6k, 19.2k and 187.5kbps baud rate. Free Port Baud Rate: 1.2k-115.2kbps Protocol: Supports PPI protocol, free port protocol, USS protocol. Perfect Clock: Built in clock battery, double loop power supply design, support perpetual calendar standby use for more than 2 years. Reliable Encryption: Unbreakable after encryption, complete protection on your program. Power Down Retention: Using for FLASH technology, no need for battery support, permanent storage. Comprehensive Protection: Power supply anti reverse connection design, communication port electrostatic protection design, analog anti short circuit protection. Support PID: Support PID command, which can facilitate users to realize multi path PID control. Independent Power Supply: Power supply board with good materials and sufficient power to meet multiple expansion and sensor power supply. Strong Anti Interference Ability: After strict industrial field test and environmental test. High Speed Pulse Output: Transistor model products, supporting 100K high speed pulse output. Compatibility: For S7 200 CPU222XP