Features: - Can be used in circuits to demonstrate Ohm's law. - Serves as an adjustable resistor to extend voltage measurement range. - Used for measuring unknown resistance. - Enables measurement of electromotive force and internal resistance of power supplies. - Functions as a known resistor to regulate required current in circuits. - Suitable for physics electricity experiment teaching. Specifications: - Resistance Range / Minimum Step: 0 to 9999 Ω, 1 Ω step - Housing Material: Plastic - Dimensions: 14 × 10 × 5 cm (5.51 × 3.94 × 1.97 inches) - Color: Black - Quantity: 1 pc - Display Type: Analogue and Digital - Accuracy Class: As specified - Operating Temperature: As specified - Electrical Testing Voltage: As specified - Material: Plastic Package Includes: - 1 × Simple Resistance Box Note: - Light conditions and display settings may cause slight color variation between the image and the actual product. - Measurement tolerance: ±1–3 cm.