Commax 1 to 1 DC door phone
Description:
This package consist of 1 unit DR-4KD (as door unit) and 1 unit DR-4D (as room unit). Door unit is typically installed near the door. Room unit is typically installed inside a secured room.
COMMAX intensive R&D and quality control since 1968 has made COMMAX global top brand delivering exceptional good quality product to over 100 country world wide. COMMAX is the brand of confidence in door phone and intercom equipments.
How to use:
Visitor press call button on the door unit and then listen to the "Electronic-Tone" sound from the room unit. Tenant pick up handset on room unit and talk to visitor. Upon confirming visitor identity, just press the button on room unit to open door. Volume can be adjusted using a knob on room unit.
Specification:
| Parameter | Description |
| Power source | 4 pcs x 1.5V (AA size battery) |
| Power consumption |
Idling: 15mA. Chime signal: 210mW. |
| Effective wiring distance | 300m using 0.65mm copper wire |
| Dimension (cm) |
Room station: 4.35(D) x 9.85(W) x 21.5(H) cm Door station: 12.5(D) x 10(W) x 3(H)cm |
| Packaging dimension (cm) | 32 x 21 x 5.5 cm |
| Weight (g) | 0.8 kg |
| Wiring |
4 wire from room unit to door unit. 4 wire from room unit to electric lock. |
