Model Number: STS-FM004-#5235 Brand Name: SENTANSHA Key Specifications/Special Features: Main features:The probe and main units integrated togetherDelicate and compact design, portable to useParticular 2 headphone sockets design can let expectant mother and father hear the fetal heart sound together

High sensitive doppler probe

Low ultrasound output intensity, much lower than the relative government standard and with high safe quality

Low power consumption, two AA size batteries can last more than 8 hours for continuous use (depend on battery type and volume)

Can be connected to a computer or recorder to record the fetal heart sound with recording cable

LCD FHR Display with high accuracy

Screen will be locked automatically without signal for 15s, which is convenient for pregnant women to operate individually

Main performance:

1. Anti-electroshock type: internally powered equipment
2. Anti-electroshock degree: type B applied part
3. LCD display: 25x14mm
4. FHR measuring range: 50 - 240BPM (BPM: beat per minute)
5. Resolution: 1BPM
6. Accuracy: ±2BPM
7. Power consumption: <1W
8. Voltage: DC 3.0 V
9. Power supply: two 1.5V (AAA size) alkaline battery
10. Suitable using range: suitable for use after the 12th week of pregnancy

Probe:

1. Nominal frequency: 2.0MHz
2. Working frequency: 2.0MHz ±10%
3. Ultrasound output power: P <10mW
4. Ultrasonic output intensity: Isata <5mW/cm
5. Working mode: continuous wave Doppler
6. Effective radiating area of transducer: 208mm ±15%

Physical characteristic:

1. Dimension (L x W x H): 110 x 55 x 16.8mm (the space between probe culmination and upper panel is 26mm)
2. Weight: about 80g (including batteries)