13.8V DC ±15%. 1x Microphone with DTMF Keypad. Transmitter (ETSI EN 300 086 Standardized.Test). Audio output power:≥2W@10%. Audio Distortion: ≤5%. Spurious Rejection: ≥70dB /≥70dB. Inter-modulation Rejection: ≥60dB/ ≥65dB.
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