SICK HE18-P4A7BB Through-Beam Photoelectric Sensor

The SICK HE18-P4A7BB is a through-beam photoelectric sensor receiver from SICK's H18 Sure Sense family, designed to pair with a separate emitter to detect object interruptions along a beam path in industrial automation. It operates on a 10-30 V DC supply and is intended for integration with standard control systems, enabling presence sensing on conveyors, packaging lines, and other inline production equipment when used as part of a through-beam pair. The P4A7BB designation identifies a specific configuration within the HE18 family, ensuring compatibility with the emitter counterpart and with SICK's through-beam sensing ecosystem for consistent operation across production environments. Installation requires alignment between emitter and receiver across the sensing path and an unobstructed line of sight, with the beam path monitored to detect passing parts or materials; through-beam sensing is particularly suitable for environments where reflective or close-range sensing can be unreliable.