1、Simple to install, DIY, no need to open a hole on door. 2、It can be installed at right angle(door and side), suitable for wooden door, cabinet. 3、Install 2pcs AA 1.5V Batteries in the lock, and you can add RFID Cards. (Managing Card:1pcs, Guest Card:10pcs). 4、Two models for your selection. One use any cards to open the cabinets (this is perfect to use at home). Another one is to use the managing card or two guest cards to open the cabinets (perfect to use at business, such as hotel, massage etc.) 5、Fix the lock at inside of cabinet. Close it. And use ID card to touch outside of cabinet, its lock will flick and open the door.(Note that tag only can be used for Max.2.5cm thick door, the ID card can be used for Max.4.5cm thick door). Features: Simple  to install, DIY, no need to open a hole on door. It can be installed at right angle(door and side), suitable for wooden door, cabinet. Install 2pcs AA 1.5V Batteries in the lock, and you can add RFID Cards. (Managing Card:1pcs, Guest Card:10pcs). Two models for your selection. One use any cards to open the cabinets (this is perfect to use at home). Another one is to use the managing card or two guest cards to open the cabinets (perfect to use at business, such as hotel, massage etc.) Fix the lock at inside of cabinet. Close it. And use ID card to touch outside of cabinet, its lock will flick and open the door.(Note that tag only can be used for Max.2.5cm thick door, the ID card can be used for Max.4.5cm thick door). Specification: Condition: 100% Brand New Material: ABS Plastic Color: Black Package List: 1 * Lock (Batteries Not Included) 2 * Door Buckle 1 * Installation Kit 2 * Access Card Note: Needn't hole, work at batteries. Note it can't work at metal door.