PLC Control Board Programmable Controller CPU224XP for Siemens S7‑200 Ethernet DC24V 216‑3AD23 Item Type: PLC Control Board Model: 216-3AD23 Material: Plastic Data Storage: 10K Program Memory: 24K Maximum Expansion Module: 7 Photoelectric Isolation: 500VDC for 1 minute Digital Quantity: 14 Input/10 output Analog Quantity: 12 Input/1 output Communication Interface: 2 x RS485 + 1 x RJ45 High-Speed Counter: Single-phase 6 channels, dual-phase 4 channels High-Speed Counter Input Rate: 3 Channels single-phase 50K, 3 channels single-phase 200K, 4 channels AB-phase 200K How e: 1. In order to prevent the internal temperature of the machine from overheating, please use the wall-mounted installation. It is required to leave enough space above and below as a heat dissipation space. 3. Avoid dust, oil, and corrosive environments; pay attention to electrostatic protection (avoid direct contact with the circuit board circuit with your hands). Adopt rail installation. Size(LxWxH): Approx. 88 x 138 x 62mm / 3.5 x 5.4 x 2.4in