RA-Lock

XT SFIC Installation
Medeco M4

Medeco

Medeco XT Electronic Locking System
Medeco XT Web Manager: Full Tutorial
Medeco XT: How to Operate an XT Key
Medeco Smart SFIC Solutions
Medeco CLIQ Intelligent Key System

Abloy

The definition of waterproof padlock – Abloy Super Weather Proof 
The definiton of waterproof padlock – Abloy Super Weather Proof (SWP) technical details

Yale

Yale nexTouch Keypad Lock
Yale nexTouch Keypad Lock – Battery Backup Feature