Light Meter with Bluetooth APP Function: The -5000APP handheld illuminance meter can be connected to a mobile phone via Bluetooth to monitor data from a long distance and facilitate data storage and recording. High- Digital Illuminance Meter: This digital light meter has a measurement range of 1-400000LUX and a resolution of 0.1lux/fc. It uses silicon filter diodes as the photoreceptor and has high accuracy. 270 Rotating Probe: The separate light sensor of the light meter can rotate 90 degrees on one side or 270 degrees on one side, allowing you to find the best measurement angle for measurement. LUX/FC Unit Conversion: This digital lux meter uses an enlarged LCD display for clearer reading display. LUX/FC units can be switched and can also be used to measure ambient temperature. Multi-functional Application: -5000APP digital lumen meter can measure various visible light sources, such as LED lighting, plant lights, fluorescent lamps, metal halide, high-pressure sodium lamps and incandescent bulbs, etc. Suitable for use in homes, schools, laboratories, offices, stages, workshops, factories and other scenarios. Specification: Measuring range:1-400,000Lux Accuracy: less than equal 10000Lux: 4% rgd1.0% f.s. equal 10,000Lux: 5% rgd1.5% f.s equal 200,000Lux: 8% rdg+2.0%f.s Resolution: 0.1LUX/FC Maximum display digits: 3999 Photoreceptor: silicon filter diode Temperature measurement range: -10-50, Accuracy: 1 Resolution: 0.1 Low battery prompt:Yes Dimensions: 175x60x33mm Weight: Approximately 139g (no including battery) Color:As Shown Material:plastic Package Contents: 1 * Luxmeter(without 2xAAA batteries) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.