Rapid TM-20A Digital Stopclock

The TM-20A is a high accuracy, easy to use unit that can be used either as a standard timer or may be automatically started and stopped by an externally connected device.

* Uses a 30ppm quartz crystal and 27pF fixed calibrated capacitor for high accuracy * External start/stop control connection via 4mm jack sockets * Stop/Start and reset buttons on top of unit for easy activation * Elapsed time function * 15mm LCD display * Housed in an impact resistant ABS case * Requires 1x AAA 1.5 volt battery (supplied)