The Grafco External Fetal Doppler is intended for use as a diagnostic tool to measure Fetal Heart Rate and Maternal Uterine Contraction in a hospital or clinic setting using non-invasive, ultrasound Doppler and external TOCO technique. 
Included features

• 4.1" x 3.1" adjustable LCD
• Build-in thermal line recorder
• Nine–crystal broadband pulsed wave transducer
• FHR1 and FHR2 monitoring
• Remote marker automatic fetal movement recognition
• TOCO monitoring
• Real-time displaying CTG, 12-hour monitoring trends,
• and playback
• Audible and visible alarm with upper and
• lower alarm limits settings
• Automatic transducer identification

Dimensions:	13.0 W x 10.6 D x 3.9 H in. (330 x 270 x 100 mm)
Weight:	7.7 lb (3.5 kg)
Safety
Complies with:	IEC 60601-1, IEC 60601-1-2,
	EN 55011, IEC 1157, YY 0449-2003
Display:
Backlight:	Cold cathode fluorescent
Active Area:	4.1W  x 3.1 H in. (103.0 x 79.0 mm) (320 x 240 dots)
Resolution:	85 dots per inch
Printing:
Recording Paper:	Z-fold, thermal
Printing Width:	4.4 in. (112mm)
Paper Advance Speed:	1cm/min, 2cm/min, and 3cm/min (optional)
Contraction(External TOCO)
TOCO Range:	0% - 100%, 135g strength corresponding to 100%
Sensitivity:	3.7uV/V/mmHg
Marking:
Manual fetal movement marking
Ultrasound Transducer:
System:	Pulsed Doppler
Weight:	.35lb (160g)
Cable Length:	98 in (2.5m)
Dimensions:	3.5 x 2.6 in. (90mm x 65mm)
Latex Free
TOCO Transducer:
System:	Passive Strain Gauge
Weight:	.33lb (150g)
Cable Length:	98 in (2.5m)
Dimensions:	4.0 x 2.0 in. (102 x 50 mm)
Latex Free
Remote Marker
Length:	98 in (2.5m)
Weight:	.12 lb (56g)