1、The module can detect flame or light source with wavelength in the range of 760 nm to 1100 nm. The lighter test flame distance is 80 cm. The larger the flame, the farther the test distance is. 2、The detection angle is about 60 degrees, which is especially sensitive to the flame spectrum. 3、Sensitivity is adjustable ,adjusted by the blue digital potentiometer. 4、Comparator output directly triggers the relay. 5、Output with blue terminal block for easy wiring. Item Type:Fire Detector Sensor Size:50 x 26mm / 1.97 x 1.02in Thickness:19mm / 0.75in Current:>150mA Load:250VAC 10A or 30VDC 10A Users Manual: 1. The flame sensor is most sensitive to the flame and also responds to the sunlight. It is generally used for fire alarms and other purposes. 2. By adjusting the potentiometer, the intensity of the sensor's induced flame can be set. When the flame exceeds the set threshold, the relay pulls in, the common end is connected to the normally open end, and when the flame is lower than the set threshold, the relay is disconnected. The common end is connected to the normally closed end; 3, the common end, normally open, normally closed three ports are equivalent to a dual control switch, when the relay coil is powered, the common end is open to the normally open end, when there is no electricity, the common end and the normally closed end are turned on; 4. The sensor and the flame should be kept at a certain distance to avoid damage to the sensor at high temperature. The flame distance of the lighter is 80cm. The larger the flame, the farther the test distance is. 1 x Fire Detector Sensor