* 0 dB = 1 V
| Power Source | 3 V DC (R14P × 2) |
| Current Consumption | 2 mA during chime and microphone operation 10 μA at no operation |
| Chime Tones | 4-tone chime (up/down) |
| Microphone | Unidirectional dynamic type |
| Microphone Frequency Response | 200 Hz – 10 kHz |
| Output | Chime signal: -45 dB*, 600 Ω, unbalanced (chime volume control set to maximum position) Microphone: -53 dB, 600 Ω, unbalanced (1 kHz, 0 dB = 1 V/Pa) |
| Finish | Case: Zinc die casting, metallic gold |
| Weight | 770 g |
| Accessory | Connection cord (2 m) ……1, Slotted-head screwdriver……1, Windscreen……1 |
