The JDS-2000WK is a 2,000 W wall-mounted electronic air-raid siren designed for space-efficient installation. It provides nationally specified preliminary warning, air-raid warning, all-clear, disaster warning, and stop functions for civil-defense and public-warning applications.
PRODUCT FEATURES
◆ Microcomputer-controlled sound-generation section provides strong interference immunity and high control accuracy. ◆ Large-format LED clock display supports on-the-hour time announcements. ◆ One microphone input and one line input support public-address operation and connection to external audio sources. ◆ Automatic uninterrupted transfer between AC and DC power supplies supports emergency operation. ◆ High-efficiency regulated switch-mode power supply provides low ripple and stable output. ◆ Standard multifunction wireless remote-control interface can be adapted to different remote-control system requirements. ◆ Wall-mounted enclosure saves space and simplifies installation.
TECHNICAL SPECIFICATIONS
ITEM
SPECIFICATION
Model
JDS-2000WK
Operating Voltage
220 V AC / 60 V DC
Operating Current
AC: <=13 A; DC: <=40 A
Output Impedance
6 ohms
Rated Output Power
2,000 W
Sound Pressure Level at 5 m
>=125 dB; compliant with applicable national civil-defense standards
Microphone Input Sensitivity / Impedance
<=20 mV / 600 ohms
Line Input Sensitivity / Impedance
<=200 mV / 4.7 kohms
Frequency Response
Within /-3 dB, 300-8,000 Hz
Total Harmonic Distortion
<=5%
Signal-to-Noise Ratio
>=60 dB
Operating Temperature
-35 C to 55 C
Net Weight
23 kg
Dimensions
520 x 400 x 220 mm
Application: Wall-mounted electronic siren for civil-defense warning, air-raid warning, disaster notification, emergency broadcasting, and public-address applications.
