Power Source R14P (C) × 6 (9 V DC) Rated Output 15 W Maximum Output 23 W Battery Life Voice: Approx. 9 hours (JEITA)*, Whistle: Approx. 20 minutes (JEITA)* Signal Sound Whistle (1.6 to 2.4 kHz) Audible Range Voice: Approx. 400 m (JEITA)* Whistle: Approx. 500 m (JEITA)* Diaphragm Polyimide
(*1) 0 dB = 1 V Power Source Battery: R20P (D) × 10 (15 V DC) External Power: 12 V DC Battery Rated Output 30 W Maximum Output 45 W Signal Sound Whistle (1.6 to 2.4 kHz) Battery Life Voice: Approx. 17 hours (JEITA (*2)), Whistle: Approx. 90 min. (JEITA
(*1) 0 dB = 1 V Power Source Battery: R20P (D) × 10 (15 V DC) External Power: 12 V DC Battery Rated Output 30 W Maximum Output 45 W Signal Sound Whistle (1.6 to 2.4 kHz) Battery Life Voice: Approx. 17 hours (JEITA (*2)), Whistle: Approx. 90 min. (JEITA