Sell HDB Letter Box Lock, 20/30mm ,HDB Keyless Mail/Letter box Lock, Keyless Cabinet Lock, Number Lock [Fits HDB ,CONDO,EC] best price

Feature -High quality and security in place - Lock professional manufacturer -3 Digit Combination Lock -Anti-corrosion,Durable Specifications: - Lock Type : Combination Cabinet Cam Lock or Door Lock,Letter Box Lock. - Key Type : Keyless - Material : Zinc Alloy -Finished:Electrophoretic Paint - Key combination : 3 Group Code (0-9) -Size Length 20/30mm How to change password: 1. Make sure the lock is open, code 0-0-0; 2.Find a hole on the lock turntable; 3.Find a pointed object; 4. Insert it into the hole; 5.Reset the code. m.youtube.com/watch?v=CpCjlRLYfgk