Product Overview
MODBUS NS01is an industrial grade noise/noise sensor with a measurement range of 30-120dB, which complies with the international standard IEC 61672. Built in high-precision condenser microphone, supports A/C frequency weighting, and outputs real-time sound pressure level data through RS485 Modbus RTU protocol. It can be connected to Home Assistant to achieve functions such as environmental noise monitoring, noise exceeding alarm, and quiet time management.
Decibel Comparison Table
| Decibel (dB) | Typical Environment | Feeling |
|---|---|---|
| 20-30 | Late Night Bedroom/Recording Studio | Extremely Quiet |
| 40-50 | Quiet Office/Library | Quiet and Comfortable |
| 60-70 | Normal Conversation/Office | Normal |
| 80-90 | Busy streets/factory workshops | Noisy and harmful for long periods of time |
| 100-120 | chainsaw/rock concert | Pain threshold, hearing loss |
Technical specifications
- Measurement range: 30-120dB
- Frequency range: 20Hz-12.5kHz
- Weight calculation method: A Weight (simulating human ear)
- Accuracy: ± 1.5dB
- Output: RS485 Modbus RTU
- Power supply: DC 12-24V
HA linkage scenario
- Noise over limit alarmAt night>50dB → push "neighbor noise reminder"
- Baby room monitoringDetected crying (>70dB) → Notify parents on mobile phone
- Meeting Room StatusMeeting room>60dB → status display "in use"
- Office quiet time>55dB continuously for 10 minutes → Reminder to keep quiet
🛒 Purchase and Consultation
The MODBUS products introduced in this article can be purchased through official channels.
📍 Modbas Intelligence|12th Floor, Tower A, Langqing Plaza, Guanyin Bridge, Jiangbei, Chongqing, China
📞 Phone:+86-18801054468
📧 Email: iot@modbus.com | 🌐 Official website:www.modbus.cn
📱 Search for "Modbus Debugging Assistant" on WeChat Mini ProgramModbus Debugging Assistantto learn more about product information
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