The HLA Liquid Level Alarm Series from See Water is designed to alert of potentially threatening liquid level conditions. The series includes the HLA type 1 (indoor rated) liquid level alarm, the HLA-4X liquid level indoor/outdoor robust alarm, and the HLA-4X-X, a variety of models monitoring 2 to 10 liquid level alarm point. The alarm panels are ideal for tank monitoring, sewage pump chambers, sump pump basins, lift stations and other liquid level monitoring applications. They are UL listed. 888/733-9283; www.seewaterinc.com.