Accurate, reliable punch data

With a programmable signal control, reliability is everything. You want to set it and forget it. Period. That’s exactly why Lathem reliability is second to none. We’ve designed two distinctly different signal controls, so you can choose the unit that perfectly fits your needs, your premises and your budget. With Lathem reliability and a host of special features, it’s no wonder you see Lathem programmable signal controls ringing and sounding horns for schools and workplaces across America.

PC Clock is user friendly

The Sonachron is a dual purpose, single circuit program timer–ideal for signaling horns and bells. Or for controlling the ON/OFF status of electrical devices like HVAC or appliances. Its user-friendly, front mounted keypad lets you program the exact minute and weekday(s) of each event. Manual events can be activated at any time by pressing a single key. Press the LUNCH or BREAK key to start unscheduled lunches or breaks. The warning and final bells will automatically ring at the end of the selected duration.

Improved Functionality

Keypad can be security protected to prevent unauthorized access. Timekeeping accuracy is controlled by power line frequency selectable 50 or 60Hz. Also, during power failures timekeeping is uninterrupted for up to 7 days. Time keeping can be controlled by Lathems’ RC Master Clock Synchronizer (RC-MS) to keep the DWA-S time synchronized with the RC Master Clock. The latest and most innovative way to incorporate GPS synchronized time.