Brand TOA Model EC-100MChime Microphone
Brand TOA Model EC-100M Power Source 3 V DC (R14P × 2) 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)