Model	ET-DW002A2	ET-DW002C4
Image Sensor	1/3″ SONY CCD	1/3″super HAD SONY CCD
Number of Pixels	PAL:500(H)X582(V) NTSC:510(H)X492(V)	PAL:752(H)X582(V) NTSC:768(H)X492(V)
Horizontal Resolution	420TVL	540TVL
Lens	3.6mm MTV Lens	3.6mm MTV Lens
Standard cons white lights	8pcs(φ3MM)	8pcs(φ3MM)
Vision Distance	5m	5 m
Waterproof level	IP68,underwater 50m	IP68,underwater 50m
Illuminance	0Lux(White light on)	0Lux(White light on)
Scanning System	2:1 interlace	2:1 interlace
S/N Ratio	48dB	48dB
Rate of Scanning (H)	PAL:15.625KHZ/NTSC:15.734KHZ	PAL:15.625KHZ/NTSC:15.734KHZ
Rate of Scanning (V)	PAL:50HZ/NTSC:60HZ	PAL:50HZ/NTSC:60HZ
Syne Method	Internal synchronization
Gamma Characteristic	0.45	0.45
White Balance	Auto
Video Output	Compound 1(Vp-p) 75Ω
Electric Shutter	PAL:1/50~1/100,000 secNTSC:1/60~1/100,000 sec	PAL:1/50~1/100,000 secNTSC:1/60~1/100,000 sec
Power	DC12V(+/-10)	DC12V(+/-10)
Current Consumption	130mA	130mA
Work Tempreture	-10℃~50℃(10~60RH)	-10℃~50℃(10~60RH)
Storage Tempreture	-20℃~60℃(10~60RH)	-20℃~60℃(10~60RH)
Size	98*57*48 mm	98*57*48 mm
New Weight	90g (Only body)	90g (Only body)

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