1. Input voltage range: 4-40V DC; 2. Output voltage range: 1.25-37VDC adjustable; 3. Output current: 2A; 4. Voltmeter range: 0 to 40V, error +/-0.1V; 5. Input reverse polarity protection; Built in output short protection function; 6. Built in thermal shutdown function; 7. Press the rightkey to let the display show the input or output voltage. when the right out led light, it shows output, the left IN led show input. 8. Model: LDTR-WG0178 9. Quantity: 1 piece 10. Form Color: Deep Blue 11. Material: PCB + electronic components 12. Dimensions: 2.36 in x 1.38 in x 0.55 in (6 cm x 3.5 cm x 1.4 cm) 13. Weight: 0.74 oz (21 g) 14. Packing List: 1 x Module