Fiber optic transmitter and receiver bidirectional, each direction up to 4x 12V-24V DC digital IO switching signals / control signals via fiber optic lines (Mulimode or singlemode optical fiber). ✔ 🏭 suitable for industrial use ✔ digital IO switching signals / control signals 12V..24V DC 8 channels 4x transmit and 4x receive (relay output) ✔ multimode fiber optic duplex SC / ST (BFOC) max. 5km (1dB / km) singlemode fiber optic duplex SC / ST (BFOC) max. 30km (0.4dB / km) ✔ input voltage Vin 12V..30V DC ✔ extended operating temperature-range -40°C..+70°C ✔ Mounting on 35mm DIN rail (TS 35)