SEM601 noise sensor is a high-precision sound measurement instrument with a range of up to 30dB~130dB, which meets the daily measurement needs and is widely used in various fields such as home, office, workshop, automobile measurement, and industrial measurement.
SEM601 noise sensor is a high-precision sound measurement instrument with a range of up to 30dB~130dB, which meets the daily measurement needs and is widely used in various fields such as home, office, workshop, automobile measurement, and industrial measurement.
This product adopts high-sensitivity condenser microphone with stable signal and high precision. It has the characteristics of wide measurement range, good linearity, convenient use, easy installation, and long transmission distance.
| DC power supply (default) | 10~30V DC |
| Power | 0.1W（RS485/TTL), 0.15W (current type), 0.18W (voltage type) |
| Transmitter circuit operating temperature | -20 ° C ~ + 60 ° C, 0% RH ~ 80% RH |
| Output signal | Rs485,TTL, Current output: 4~20mA, Voltage output: 0~5V/0~10V |
| TTL | Output voltage: ≤0.7V at low voltage, 3.25~3.35V at high voltage Input voltage: ≤0.7V at low voltage, 3.25~3.35V at high voltage |
| RS485 | ModBus-RTU communication protocol |
| Resolution | 0.1dB |
| Measuring range | 30dB~120dB |
| Frequency Range | 20Hz~12.5kHz |
| Response time | ≤3s |
| Stability | Less than 2% in use period |
| Noise accuracy | ±0.5 dB (in reference pitch, 94 dB @ 1 kHz) |
| Load capacity | Voltage output: Output resistance ≤250Ω |
| Current output: ≤600Ω |
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