Digital Volume Foetal Heart Beat Monitor Our range of digital volume foetal heart beat monitors are available in various specifications and can be customized as per the requirements of our customers. The salient features and specifications of our products are as follows: • Operating Probe frequency :2MHz for Obs.Gyne • Power:Mains and Battry operated • Speaker/Ear Phone facility • Indicate the heart beat • Digital Disply to read the volume level Voltage : 220 V AC 50 Hz • Frequency : 2 MHz • Input : 9 Volt DC • Battery : 1.2 AH 12 volt DC • Absorbed power : 9 volt DC • Audio output power : 4 Watts