Our this access controller has Reliable, durable & highly accurate ZK optical sensor, please check below pictures to see more. Please get English version instruction from. 3rd party electric lock, exit button, door sensor, alarm and bell. Entrance / exits, secured stock areas, after hours access, garage, any applications. Working Current: 0.2-0.45A.Supports NC Mode (Fail-Safe Mode) & NO Mode (Fail-Secure Mode). This item is in the category "Business & Industrial\Facility Maintenance & Safety\Access Control Equipment\Keyless Access Systems\RFID Readers & Writers". The seller is "gregzhong" and is located in this country: CN. This item can be shipped worldwide.