24VDC fire electric alarm bell for fire alarm system
Conventional Electric Bell:fire fighting alarm bell
Operating Voltage Range: DC24V
Alarm Current Maximum 70 mA@ 24 VDC
Alarm Sound Intensity: Minimum 95dB
Operating Humidity Range: 10% to 93% Relative Humidity, Non-condensing
Operating Temperature Range: -10°C to 50°C (14°F to 122°F)
Input terminalWire Gauge: 12 to 18 AWG
Dimensions: Diameter 150mm, Height 45mm
Weight: Net Weight 670g, Gross Weight 720g
NOTICE: This manual should be left with the
owner/user of this equipment.
The JL188 Electric bell of notification appliances offers a
wide range of Sound, for wall and ceiling applications,
indoors and outdoors. They are designed to be used in 24
volt DC systems.
Loop Design and Wiring
The system designer must make sure that the total current
drawn by the devices on the loop does not exceed the
current capability of the panel supply, and that the last
device on the circuit is operated within its rated voltage.
When calculating the voltage available to the last device,
it is necessary to consider the voltage drop due to the
resistance of the wire. The thicker the wire, the smaller
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