Motor alarm has high volume 123dB, optional working voltage AC 220V/AC 110V and two-way alarm mode.

Specification:

Dimension (unit: mm):

Tips: Different types of motor alarm
1. According to the sound pressure level of the sound signal:

• Large motor alarm: Sound pressure level is above 100 dB.
• Medium-sized motor alarm: The sound pressure level is between 90 dB and 50 dB.
• Small motor alarm: Sound pressure level is below 40 dB.

2. According to the form of energy conversion:

• Motor alarm: convert electrical energy into mechanical energy, and then convert mechanical energy into acoustic energy.
• Electro acoustic alarm: The small audio signal is amplified by low-frequency power and converted into acoustic energy. That is, electronic energy is converted into sound energy.
• Pneumatic alarm: Converts electrical energy into mechanical energy, and then converts mechanical energy into pneumatic energy, and converts pneumatic energy into acoustic energy.
• Hand crank alarm: Use human hand to shake crank to issue an alarm signal.

3. According to different installation conditions:

• Fixed alarm: The alarm is installed in a fixed location.
• Movable alarm: Alarms are installed in motor vehicles or other movable forms.
• Lifting type alarm: Usually hidden in the ground, when need to issue an alarm, it will be raised on the ground.