B/W video doorphone(DF-930H1)

2. Input impendance: 75Ω

3. Brightness Test Grade: >Level 17

4. Screen: 3.5"/4" Black & white CRT

5. Camera: B/W C-MOS/CCD

6. Duration for monitor displaying:

A. Calling without answer: 30s

B. Press viewing button: 10s

C. Intercom: 2minutes

D. Press alarm button: 10s

8. Night viewing source: IR lights

9. Camera Lens viewing angle: 92°

10. Power Source: Monitor: +15V DC through adaptor(230V AC input, 15V DC output)

11. Power consumption: Stand-by<0.5W; Operation<15W

11. Monitor measurement: 225x190x52mm Camera: 134x100x45mm

12. Monitor Weight: 1021G Camera: 200g

13. Operation temperature: -15 centi-degree+50 centi-degree