Product Profile:
JDS-2000W/1500W/1000W-BXmove/Portable air defense electro-acoustic alarm is a new generation of special air defense alarm device developed by our company according to the General Requirements of Civil Air Defense Electro-acoustic Alarm Communicator.
Product Overview:
Its overall structure is portable, beautiful appearance and convenient installation. The device consists of an alarm and a loudspeaker.
The power supply adopts high-power switching voltage stabilization technology with high efficiency and low ripple; the alarm sound is generated by single-chip computer software programming, which has simple circuit, pure tone and no noise, and stable alarm audio rate and modulation period.
The output of the power amplifier is divided into four channels. Each power amplifier output is independent. One power amplifier circuit breaks down, and the other three channels work as usual.
The speaker consists of four groups.8only300WThe loudspeaker is composed of a wide range of sound and a long range of sound transmission.
This product is mainly used for civil air defense alarm, but also for forest fire prevention, mines, oil depots, large reservoirs. Use of radio and alarm equipment in dangerous situation, airport dangerous situation, prison, community, square and other places (specific functions are different).
Technical parameters:
| Specifications | JDS-2000W-BX | JDS-1500W-BX | JDS-1000W-BX | |||
| working voltage | AC 220 | DC 60V | AC 220V | DC60V | AC 220V | DC60V |
| Working Current | AC ≤13A | DC≤40A | AC ≤6A | DC≤18A | AC ≤4.5A | DC≤18A |
| Output impedance | 6Ω | 6Ω | 6Ω | |||
| output power | 2000W | 1500W | 1000W | |||
| 5Sound pressure level at meter | ≥125dBCompliance with National Civil Air Defense Standards | ≥120dBCompliance with National Civil Air Defense Standards | ≥119dBCompliance with National Civil Air Defense Standards | |||
| Coverage radius | r≈1.5km±0.1km | r≈1.2km±0.1km | r≈0.8km±0.1km | |||
| Microphone Input Sensitivity/Impedance | ≤20mV／600Ω | ≤20mV／600Ω | ≤20mV／600Ω | |||
| Line Input Sensitivity/Impedance | ≤200mV／4.7KΩ | ≤200mV／4.7KΩ | ≤200mV／4.7KΩ | |||
| frequency response | ≤±3dB（300～8000Hz） | ≤±3dB（300～8000Hz） | ≤±3dB（300～8000Hz） | |||
| Harmonic distortion | ≤5％ | ≤5％ | ≤5％ | |||
| SNR | ≥60dB | ≥60dB | ≥60dB | |||
| ambient temperature | -35℃～+55℃ | -35℃～+55℃ | -35℃～+55℃ | |||
| Alarm weight | 23KG | 20KG | 16KG | |||
| Size of alarm | 520*400*220 | 520*400*220 | 520*400*220 | |||