Wenzhou Beck Electronic Co. Ltd's RD-228 model is an electronic lock for door-closing and intercom systems. The noiseless unit allows automatic CPU control, detection and lock. Doors can be opened through cards, remote controllers, passwords, buttons and keys. The unit retracts and sounds off an alarm to alert users that doors are not closed well.

The electronic lock integrates an anti-picklock lock tongue and a 20mm-long latch bolt. Memory supports 2,000 cards. Wireless remote control distance is 30m. The 130x106x59mm unit's working voltage and current are 12VDC and 0.3A.

Wenzhou Beck Electronic Co. Ltd specializes in R&D, production, sales and service of industrial chains and locks. The company's export markets include the US, Western Europe, Australia, Japan, South Korea and Israel.