The Battery Operated Master Clock Controller is the ideal solution for synchronizing slave clocks in institutions such as factories, offices, and schools. This reliable device produces 24V pulses to drive slave clock mechanisms and works straight out of the box with no complicated setup required. Using the easy-to-use Windows 10/11 compatible software, you can effortlessly adjust the pulse interval (every minute, every 30 seconds, or every second), pulse length, and pulse polarity — all without any driver installation. The controller supports both unipolar and bipolar (polarity-reversing) clock pulses and delivers a maximum output current of 50 mA, making it capable of driving a single slave clock. Factory calibrated for 1-second accuracy within a month, it also features crystal fine-tuning for recalibration when needed. With an input voltage range of 6–12 VDC and very low quiescent current consumption, the device achieves a typical battery lifetime of 8–12 months using eight AA batteries on a one-minute pulse setting. A 9-volt battery snap is included, though a battery holder is not included.