PC817 Optocoupler Isolation Board 4 Channel

From Makers Electronics's description

PC817 Optocoupler Isolation Module 4-Channel The 4-Channel Optocoupler Isolation Module provides reliable galvanic isolation and voltage-level conversion for digital control signals. Each channel uses an optocoupler input and a driven output stage, with selectable input ranges to accept common control voltages and screw-terminal wiring for secure connections. LEDs indicate input activity per channel, and the outputs can be configured to drive either high-or low-trigger loads. The module is compact and panel-mountable or DIN-rail mountable (with optional carrier/bracket), making it suitable for automation, industrial control, and DIY projects that require robust isolation between control electronics and field devices. Features Four optically isolated channels for safe galvanic separation. Selectable input control ranges: 3–12V or 9–24V. Output signal range: 3–24V (suitable for driving typical logic and relay circuits). LED indicator for each input channel to show activity. Dedicated 2-pin screw-clamp terminals for each channel’s input and output for secure wiring. Outputs configurable to drive either high-triggered or low-triggered loads. Four Ø3.5 mm mounting holes for easy installation. Optional DIN-rail mounting using a PCB carrier or bracket. Compact footprint and low profile for space-constrained panels. Specifications Parameter Value Channel Count 4 channels Input Control Ranges 3–12V or 9–24V (selectable) Output Signal Range 3–24V Indicators 1× LED per input channel Input Connector 2-pin screw clamp terminal (per channel) Output Connector 2-pin screw clamp terminal (per channel) Trigger Modes High-trigger or low-trigger selectable output Mounting Holes 4 × Ø3.5mm Mounting Options Mounting holes, PCB carrier, PCB bracket (DIN-rail) Dimensions 76mm x 50mm x 17mm Applications Isolation and level shifting between microcontroller I/Os and industrial controllers or relays. Protecting low-voltage control electronics from noisy field circuits and ground loops. Signal interfacing for PLC inputs/outputs, motor controllers, alarm systems and sensor networks. DIY automation, test rigs, and retrofit control panels requiring safe separation of domains. Multi-channel opto isolation in robotics, lighting control, and remote I/O expansions. Package Contents 1x PC817 Optocoupler Isolation Module 4-Channel.