Based delay control circuit, lock time can be in 0-15 seconds. Set NC / NO outputs, can control types of electric locks. The power supply controller is easy to install and carry. It has anti-interference ability, stable and reliable. The back of the power supply is designed with a hole, which can be hung . Output Voltage: DC12V Output Current: 3A Compatible: For Door Access Control System size:120mm x 90mm x 35mm Material:iron colour:white Package Contents: 1 x Power Supply Controller 1 x User Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.