power supply:size 5 alkaline battery(nonrechargable)
详情
Feature:
White backlight LCD can display FHR for darkness use: show the probe working frequency, battery capacity, Doppler signal and alarm indicator; user friendly interface makes
it easy for operation;
Output jack can be connected to
auditory instruments. ( headset )
Sound amplified and recording function;
Clear sound with a high quality loudspeaker;
2.0MHz probe is standard probe, can be changed into 3.0MHz, 5.0MHz, 8.0MHz
very easily;
1.5V batteries be chosen by alkaline battery or rechargeable batteries.
