4 Wires Card iButton Probe Dallas Reader With LED Indicator Light

Features: Made of zinc alloy material, high conductivity, ensure accurate data transfer. Chromeplated contacts, effectively prevent LED from oxidation. Reading and writing Dallas key card. Easy to install on doors. With LED lights, for easy reading card at night. Total 4 wires, including 2 signal wires and 2 indicator light wires. Specification: Condition: 100percent Brand New Material: Zinc Alloy Color: As Picture Shown Wire: 4 Wires. External Dameter: 37mm1.46in Package Weight: Approx. 37g1.3oz Package List: 1 * iButton Probe Reader .Made of zinc alloy material, high conductivity, ensure accurate data transfer. Chromeplated contacts, effectively prevent LED from oxidation. Reading and writing Dallas key card. Easy to install on doors. With LED lights, for easy reading card at night. Total 4 wires, including 2 signal wires and 2 indicator light wires.