1. The switch can operate normally on battery power or as an auxiliary battery switch. 2. Small in size, neat appearance, robust and durable. 3. Easy to install; several installation methods are possible. 4. Suitable for professional trucks, tractors, and racing cars. These switches are now used in many classic motorhomes. 5. This product offers a wide range of uses and can be used to turn various electrical equipment installed inside and outside the vehicle on/off (such as strobe lights, chassis lighting, fog lights, dome lights, instant power cut-off, etc.). Product Name: Battery Isolator Rated Current and Voltage: 12-24V Contact Resistance: 50mM Insulation Resistance: 100mM Note: Installation instructions not included. We strongly recommend professional installation. Please carefully check that this item meets your requirements. Tips: This product may be updated periodically. Due to different batches, there may be slight differences or variations in color, which will not affect its use. Color: See photo Materials: Plastic + Metal Package Contents: 1 x Vehicle Emergency Stop Master Switch Only the above-mentioned contents are included. Note: Light reflection and different displays may slightly alter the color of the item in the picture. The measurement allowed error is +/- 1-3 cm.