| Brand | Hikvision |
| Model | DS-KV1100-ME2/Surface |
| Operating system | Embedded analog operating system |
| Audio | Bidirectional audio with microphone and speaker |
| Keypad | Mechanical call button |
| Outputs | 1 x relay output |
| Inputs | 1 x input for telephone |
| Communication | 2 wires |
| Power | AC 220 V (by means of a telephone line for 2 wires) |
| Degree of protection | Suitable for exterior IP55 |
| Material | Aluminium alloy |
| Temp. operation | -10 ºC ~ +50 ºC |
| Dimensions | 136 (H) x 56 (W) x 40 (D) mm |
| Brand | Hikvision |
| Model | DS-KH1101 |
| Operating system | Embedded analog operating system |
| Operation mode | 1 button |
| Inputs | 1 x input of 2 wires for outer plate |
| Audio | Two-way audio with integrated microphone and loudspeaker |
| Connection | 2 analogue wires |
| Power | AC 220 V |
| Temp. operation | -10 ºC ~ +50 ºC |
| Dimensions | 210 (H) x 68 (W) x 58 (D) mm |
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