1.Comprehensive Testing Capabilities: The -1812 sensor test box is designed to efficiently test various sensors, including photoelectric switches, proximity switches, magnetic switches, and fiber optic amplifiers, versatility in your testing needs. 2.Built-in Buzzer Mode: This device includes a buzzer mode that provides audible alerts during testing, enhancing user awareness and making it easier to identify when a sensor is activated or fails. 3.Short Circuit Protection: Engineered with output short circuit protection, the -1812 safeguards against potential damage during testing, promoting and reliability of both the test box and the sensors being assessed. 4.Handheld Design: The portable design of the -1812 allows for easy handling and transportation, making it suitable for both fieldwork and laboratory environments, you can conduct tests wherever needed. 5.User-friendly Interface: Featuring a straightforward interface, the sensor test box simplifies the testing process with clear indicators and easy-to-use controls, making it accessible for both experienced technicians and beginners. Part Name:Sensor test box -1812 Model: -1812 Test type: automatic NPN/PNP identification Output current: ≤0.15A 12V output Battery capacity: 2500 mAh Theoretical working time: 10H 24V output 15mA Nominal voltage: 9V+9V 9V alkaline battery Power supply: 2x9V batteries Working temperature: -10℃~45℃ Other functions: buzzer mode, output short circuit protection Color: As Shown Material: Metal+Plastic Package Contents: 1 x Handheld sensor 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.