ER-2230W โทรโข่งแบบสะพายไหล่ ขนาด 30 วัตต์ + เสียงนกหวีด (สูงสุด 40วัตต์) (40W max.) Shoulder Type Megaphone with Whistle The ER-2230W is a shoulder megaphone having an EXT. mic input, AUX input, DC power input, battery meter and whistle function. It can be mounted to the optional ST-16 speaker stand. Microphone with anti-bacteria treatment improve hygiene and safety during use. The newly developed polyimide diaphragm is employed to ensure high sound quality. ER-1015 Spec. Power Requirements Battery: R20P (D) × 10 (15V DC) External Power: 12V DC Battery Output Power Rated 30W, max. 40W Battery Life Voice: Approx. 17hrs. (EIAJ)*1 Whistle: Approx. 90 min. (EIAJ)*1 Audible Range Voice: Approx. 800m (EIAJ)*1 Whistle: Approx. 1000m (EIAJ)*1 Signal Sound Whistle (1,600Hz to 2,400Hz) AUX Input Sensitivity -10dB*1 (300mV), 10k ohms (ø3.5 mini jack, stereo plug acceptable), volume control EXT Mic Input 600 ohms, unbalanced, ø3 phone jack, volume control Diaphragm Polymide film (voice coil, bobbin) Antibacterial Treatment Microphone Operating Temperature -0ºC to +40ºC Finish Horn ring: Vinyl chloride, gray Horn: Aluminum, light gray, paint Microphone and other: ABS resin, gray Strap: Nylon, black Others: ABS resin, gray Dimensions ø235 × 512mm Weight Body: 3.6kg (without microphone and batteries) Microphone: 150g Accessories ø3.3 mini plug (AUX input) × 1 External power supply cord (1m) × 1 Splash-proof cover × 1 Option Speaker stand: ST-16