Re: CCTV

[tony sayer]

In article , Dave Plowman writes

>> Does this CCTV cam look a good buy for £180. inc vat? > >> Is low (12 volt) better than mains ? > > There will be no difference - one will simply have an internal power >supply and be bigger. > > If you want good 'dark' performance, ignore colour and get an infra-red >sensitive B&W one - with an IR light source it will give excellent results >in the dark and decent in daylight. >

do some good lines in TV.. pardon the pun...

[biscuit]

If using a TV as a monitor you only need a cam res of 380TVL. Night day cams are good.

Here's spec for a smaller camera for £150 which includes about 18m cable.

Specification MODEL CC70-4.3 Image sensor 1/3" DSP Color CCD Effective Pixels PAL : 500(H)X582(V) H.Resolution 380 TV Lines Synchronizing system Internal Scanning system PAL 625 Lines 2:1 Interlaced Video output 1.0Vp-p Composite. 75 Ohms S/N ratio More then 50 dB (AGC Off) Min. Illumination 0,000 Lux at F2.0 BLC Automatic Shutter Speed PAL : 1/50?1/100,000 sec Gamma correction r=0.45 White Balance 2100?K ?8200?K Auto Gain Control 8dB~30dB Auto Smear Effect 0.005% MTBF 80,000 hours Power source DC12V (Tolerence:9V~15V) LED ON/OFF Automatically ON and OFF at night and day Operating current 230mA with LED on, 100mA with LED off Lens Standard 4.3mm (78?) Option 3.6mm (92?), 6.0 mm (54?), 8.0mm (39?) , 12.0mm (26?) ,

16.0mm (19?) Operating Temperature 14? F~122? F ( -10? C~ + 50? C ) Humidity Within 90% RH Output Terminal 4 Foot(1.2M) DIY cable with BNC-Female for Video, DC Jack-Male for Power 60~150 Foot(18M~50M) DIY cable with BNC-Male for Video, DC Jack-Male for Power Measurement(mm) 70mm(Dia) x 87mm(L) Weight(Approx.g) 650 Audio & C-mic("A") Available by option