www.supplyht.com/articles/94634-product-preview-control-unit-for-sump-pump-system
Product Preview…Control Unit for Sump Pump System
May 2, 2010

Glentronics introduces a 2400 control unit for the PHCC Pro Series 2400 Battery Backup Sump Pump System, which adds a slide switch on the front panel that allows the user to select either a “maintenance free” or “non maintenance free” battery. System features include: automatic switch to battery power when AC fails, automatic quick recharge, tests pump weekly and monitors system conditions.
Glentronics.
Circle 234