KLHA KM75M71 4-20MA Smoke Sensor

Product Overview

The KLHA KM75M71 is a 4-20mA smoke sensor designed for industrial monitoring applications. It utilizes a high-precision sensing core and related devices to ensure high reliability and long-term stability. The sensor can be customized with various output methods including RS232, RS485, CAN, 4-20mA, DC0~5V/10V, ZIGBEE, LORA, WIFI, and GPRS.

Technical Specifications

Key Features

• Indicator Light: Red for power, Green for alarm status.
• Built-in Buzzer: Activates when the set threshold is reached, accompanying the external alarm light.
• Breathable Cover: Vents around the probe facilitate gaseous media entry for accurate detection.

Wiring and Application

The KM75M71 supports multiple wiring configurations, including RS485, 4-20mA, and Switch wiring. Application solutions demonstrate connectivity via RS485 converter to a computer port.

RS485 Wiring: RD (PWR+), GN (PWR-), YE (RS485 A+), BU (RS485 B-).

mA/Switch Wiring: RD (PWR+), BK (PWR-), BU (mA/Switch Out). Calculation formula for smoke concentration: W Smoke=(I-4mA)X5000/16.

Installation Method

Installation involves fixing the bottom plate (A) to the ceiling and rotating the product (B) clockwise onto it.