The world has relied on wireless technology for quite some time now, but the tech itself hasn’t been as popular as wired technology due to some limitations. Wireless connections have been the core of radios for a long time. These connections are possible thanks to two basic components – receivers and transmitters. Receivers, as you would presume, are components that receive the signal and then decode the information sent from the transmitter. A transmitter is one that sends the info to various devices which contain receivers. Receivers also use an antenna that helps catch the signal sent by the transmitter.
A transmitter uses a form of modulation to send the signal over a certain distance and amplifiers to boost the amplitude of the signal. The capabilities of the amplifier determine the distance a transmitter can send a signal across, also known as the strength of the signal. A company that has been reliant on producing transmitters and receivers over the years has been Elsema with their range of both products being bigger than ever today.
Can Any Transmitter Work with Any Receiver?
One question that everyone asks when they first understand how receivers and transmitters work is if one transmitter can work with any receiver. While this is possible, and every Elsema transmitter is able to do this, you need to have a way to change the antenna when you transmit the signal. This is getting into the more advanced territory but for now, this information is more than enough to get you started.
Are Receivers Obsolete?
One might think that receivers have become obsolete since they are not being used as much anymore, but they are evolving. Manufacturers are adding different capabilities to receivers, making them more useful as they are still needed in a wide range of applications.
GLT 433MHz GIGALINK
The GLT Elsema transmitter is a handheld 433 MHz transmitter that can be programmed. It’s available with 1, 2, 3, 4, and 8 channels and it has a built-in LED light to indicate the activation of each button. With a range of up to 350 meters and over 4 billion code combinations this GIGALINK transmitter can be used for remote activation of lights and alarms, gate operation and panic buttons.
GLR 43301 GIGALINK
Just like the GLT series 433 MHz transmitter, the GLR series this Elsema receiver is made so that it can have over 4 billion code combinations. With an ANT antenna, this receiver is useable with all GLT Elsema 433 series transmitters. The GLR 44301 is ideal for wireless cement truck operation, crane control, winches and so on. While there is only one relay output, you can switch loads with up to 8 amps with this receiver.
This type of receiver is able to store an unlimited number of transmitters and all of its modes can easily be selected by the user. These modes include latching, timed and momentary and security output which can be changed on a four-way dip switch. The 43301 is crystal controlled and it uses micro-controller technology which lets you reprogram it to suit the application you want to use it for.
Long Range 433MHz GIGALINK
This transmitter, as you would expect by the name can be used to send signals across a 1000 meters distance. This 433 MHz GIGALINK transmitter is compatible with all of Elsema’s GLR 433 receivers and It comes with selectable transmission modes. These include off delay, continuous mode, and one burst mode. Just like its range varies depending on the antenna and location, so does its supply connection, which is between 11 and 24V of DC power.
This long-range transmitter comes with an ANT433M antenna and a user electable list of modes thanks to its 2-way dip-switch found right on its board. This Elsema transmitter also comes with a built-in battery monitor which lets you know when the battery is low with a red LED indicator light. With all these capabilities under its belt, it’s safe to say that this transmitter is one of Elsema’s most advanced units.
The GLR 433042240 is a receiver that you can connect to a mains supply. This 240V AC power capable unit comes with four relay outputs that can switch currents with a maximum of 8 amps. The microcontroller found on this Elsema receiver is able to store an unlimited number of transmitters safely thanks to its 32-bit encryption. This receiver is compatible with all GLT 433 transmitters and it is also available in an E version.
The GLR 43304240 has pluggable terminal blocks which make it easy to install and it comes IP66 rated which makes it great for outdoor installations. The high-efficiency toroidal transformer and high-capacity output relay make this receiver ideal for many things. The most common applications of the GLR 43304240 are pump control, security alarms, long-distance light control, controlling agricultural devices, and basic telemetry.