Frequency is a measure of how long it takes for a radio wave to oscillate from top to bottom in one complete cycle. It is measured in cycles per second, also known as Hertz. When choosing a receiver, you must ensure that it operates on the same frequency as the transmitter.
5. Encoding method
In transmission, encoding is the conversion of data into a binary signal. The binary signal is what the receiver uses to trigger an action in the circuit. That process of conversion can be protected with additional security, such as KeeLoq® hopping code, which constantly changes the valid password that allows the receiver to accept the transmitted signal. AES encryption is another option for protecting data transmission. When choosing a receiver, it’s important to evaluate the level of risk in the system and the appropriate level of security to combat it.
6. Power supply
Both transmitters and receivers require a power supply to function. Some utilise a wired power supply, while others are equipped with a battery. The environment of the installation, the style of transmitter and receiver, and the power availability on-site will dictate the type of powering that you need.
7. IP rating
If your receiver is going to be installed outdoors or exposed to the elements, you will need to choose one which is protected. The measure to look out for is an IP rating. These ratings indicate how much the receiver can withstand solids and liquids getting into its casing and potentially disrupting the system. The highest possible IP rating is IP68.