General installation guidelines:
- Try to install so that locks and communication hub ”see” each other with the LED on the communication hub “pointing” towards the lock.
- If this is not possible, find a placement so that there are no concrete and metal objects in between the lock and the communication hub.
- Avoid installing the communication hub in a low position, where radio waves can be blocked by objects or people passing by during operation.
- When the internal antenna is used, the radio coverage backwards is limited to 0,5 m/3 ft for AH15 and 3 m/10 ft for AH20/30/40. The coverage also depends on the type of wall it is installed on.
- When the external antenna is used, the radio coverage will be focused perpendicular to the direction of the antenna and in some directions the range may decrease. However the maximum range will not increase. See section Radio coverage for external antenna for details.
- The lock and the communication hub should be placed on the same side of the door. Shorter distance and “light” materials in the walls also permits placement on opposite sides.
- Be aware of that nearby metallic sheet or mesh will attenuate the radio signal. Inner ceiling, for example, is sometimes covered with foil or metallic mesh.
- Mirrors, heat insulating windows and larger metallic objects (like cable ladders) have a significant effect on radio signals and should not be closer than 20 cm (8 inches) from lock or Communication Hub.
- In difficult environments (for example where heavy radio interference is expected), or when the requirements on the radio link quality are very high, it is recommended to keep the distance between the lock and the communication hub well below the maximum recommended distance. There is no minimum distance.