● Measuring range 30dB~130dB
● Frequency response range 20Hz~12.5kHz
● Operating voltage range (5V or 12V selectable)
● Operating temperature -20℃~+60℃
● DC power supply 10~30V DC
● Output signal RS485/4-20mA/0-10V/0-5V
● Analog output range: 30~120dB, RS485 range: 30~130dB
● Resolution 0.1dB, response time ≤3s