The KEYENCE LK-HA100 is a head expansion unit connector designed for use with LK series laser displacement sensors, enabling scalable measurement configurations with high precision and stability. It allows connection of up to 10 head expansion units to a single base controller, supporting flexible multi-point measurement setups. Operating at 24 VDC ±10% (supplied from the controller), the unit consumes a maximum current of 0.6 A when one head is connected and up to 3.5 A when twelve heads are connected. The LK-HA100 ensures reliable operation within ambient temperatures of 0 to +50 °C for one expansion unit and 0 to +40 °C for two or more units, with a humidity tolerance of 35–85% RH (non-condensing). Weighing approximately 300 g, it offers robust construction and stable performance under continuous industrial use. The KEYENCE LK-HA100 may be utilized in North America, Europe, Asia, and worldwide precision measurement environments requiring modular, high-reliability laser displacement sensor expansion solutions.