Ceiling Type Noise Sensor with RS485 MODBUS Output – GAOTek
$53.16
$85.59
Description Overview The GAOTek Ceiling Noise Sensor is a professional-grade sound detection device ideal for environmental, industrial, and workplace noise monitoring. With a frequency range of 20 Hz to 12.5 kHz and accuracy of ±0.5 dB, it ensures reliable readings. Its multi-output compatibility (RS485, MODBUS, analog) supports integration with various systems. Designed with an IP68 enclosure, it operates efficiently in harsh environments. Compact at 100 × 50 × 50 mm and lightweight at 0.5 kg (1.1 lb), it is easy to install and maintain. Features High-precision noise sensor with ±0.5 dB accuracy at reference 94 dB/1 kHz Wide measurement range 30–120 dB (extended up to 150 dB for industrial use) Multiple output modes: RS485, MODBUS, TTL, 4–20 mA, 0–5V, 0–10V Fast response time ≤3 seconds with long-term stability (<2% drift) Durable IP68-rated housing suitable for indoor and industrial applications Compact, lightweight design with easy ceiling or bracket mounting Technical Specifications Type Noise Sensor Theory Capacitance Principle Frequency Range 20 Hz ~ 12.5 kHz Measuring Range 30 dB ~ 120 dB (supports up to 150 dB) Resolution 0.1 dB Noise Accuracy ±0.5 dB (94 dB @ 1 kHz reference) Response Time ≤3 s Stability Less than 2% over life cycle Output Signal RS485 / MODBUS / TTL / 4-20 mA / 0-5V / 0-10V Communication Protocol ModBus-RTU (UART or RS-485, N 8 1) Output Voltage Low: ≤0.7V; High: 3.25–3.35V DC Power Supply 10 ~ 30V DC Power Consumption 0.1W Operating Temperature -20°C to 60°C (-4°F to 140°F) Operating Humidity 0%RH ~ 80%RH Mounting Type Bracket / Ceiling Mount Material PI68 grade housing Package Size 100 × 50 × 50 mm (3.9 × 2 × 2 in) Weight (Gross) 0.5 kg (1.1 lb)
