This is a sound pressure level relay that measures the size of the input and turns the relay on when it reaches a certain level.
Can be used to control external devices with voice.
Equipped with 10 sound pressure level indicators, it can also be used as a level meter.
The audio input is two systems: a built-in microphone with the board mount, and switching input from an external dynamic microphone (sold separately).
It also supports external operation with serial signals.
Main specifications: Power supply voltage: 5V (4.5 V - 6 V); Current consumption: 60 mA (max); 8 mA (when silent); Audio input: Built-in microphone or external dynamic microphone (sold separately); Sound pressure level display: LED x 10 peak hold display time: 0 to approximately 9.9 seconds; Relay output: 1 circuit 2 contacts (rated DC 24 V/1A, AC 1 A, AC 125 V / 1 V / 1 AC 1 V / 1 AC 1 AC 125 V / 0.5 V / 0.5 A) when using built-in microphone. Approx. 55-8 On timer mode settings at 0 dB: 32 types in total, 30 types of off timer (approx. 0.5 - 600 seconds), recommended serial cable for hold: KP-232R-3V3 (6 pin 3.3 V type). Board size: W 2.7 x D 2.2 x H