In Home Security, You Can Trust us Q&A 1. Does it automatically lock? Need to be locked manually. Therefore, it is very suitable for doors that people need to frequent entry and exit. 2. Does this combination door lock need to be connected to electric? 100% mechanical lock. No battery is needed, and no power is required. 3. Can it be applied to sliding doors? More suitable for symmetrical sliding doors and ordinary doors. Come with two kinds of strikers ( Which latch to use depends on the actual situation of the door.) 4. Is it suitable for left-handed doors or right-handed doors? Work with both left and right handed doors due to adjustable unlocking direction. Operation is very simple. 5. Is this mechanical door lock waterproof? With enhanced anti-corrosion surface treatment performance, it is waterproof, sunproof, and anti-rust. 6. How long is the latch/deadbolt? 40mm 7. Does this product come with install directions and drilling template? Yes. NOTICE Please make sure that the password is set successfully before installing. The password combination does not allow the repetition of numbers. When unlocking, the password can be entered out of sequence. In order to facilitate the use of most doors, the accessories are designed with sufficient length. For actual use, please cut according to the thickness of your door. It is suitable for door frames with flat surface and no pattern. If you want to apply it to a misplaced sliding door, please make sure that your door frame can be installed with a striker. Please make sure that if this lock is suitable for your door thickness or door knob holes before purchase. Specifications: Color: Black Material: Stainless Steel+Zinc Alloy Password length: 3-7 digits CODACE 100% Mechanical Keyless Entry Door Lock with Keypad Door Knob 100% Mechanical Keyless Entry Door Lock with Keypad Door Knob Keyless Entry Door Lock with Keypad Deadbolt, Double Sided Keypad Door Lock CODACE Keyless Entry Door Lock with Keypad, Double Sided Keypads Door Lock CODACE Keyless Entry Door Lock with Keypad, Double Sided Keypad Door Lock Mechanical Keyless Entry Door Lock with Keypad Door Knob Buttons 12 Buttons 12 Buttons 14 Buttons 14 Buttons 12 Buttons 10 Buttons Deadbolt Lock ✓ No ✓ No No No Right Handed Doors ✓ ✓ ✓ ✓ ✓ ✓ Left Handed Doors ✓ ✓ ✓ ✓ ✓ ✓ Backset/Latch Standard 2-3/8"(60mm) Standard 2-3/8"(60mm) 60mm/70mm Standard 2-3/8"(60mm) Standard 2-3/8"(60mm) Standard 2-3/8"(60mm) Applicable Door Thickness 35mm-60mm 35mm-60mm 35mm-60mm 35mm-70mm 35mm-70mm 30mm-60mm Keypads Single Keypad Single Keypad Double Sided Keypads Double Sided Keypads Double Sided Keypads Single Keypad Lock Method Manual Lock Auto Lock Manual Lock Auto Lock Auto Lock Auto Lock