Well known brand BFT has many household products, and one of them is type B RCB model MITTO transmitter. Mostly used for automatic gate open control, this transmitter has heavy duty in its working period.
To change the battery, first you have to open the plastic cover from behind. Small phillips screwdriver is all the tools you’ll need. Unscrew it, and take off the plastic cover from behind. You have access to a small PCB and one Alkaline 23A 12V battery.
To change 23A 12V battery
This shouldn’t be hard in any way. Just pop out the old battery and do an easy check for leaks on PCB board or battery connectors. Clean them with alcohol if needed and prepare a new battery.
Place the new battery, and make sure to match polarity.
Align a plastic cover, easily, and screw it to hold. Check your transmitter, with a small red LED on front. Also you can check if your remote is synchronized with the receiver.
Synchronize MITTO transmitter
In most cases, the transmitter stays synchronized after changing the battery. Sometimes, that is not the case. Now we are going to explain how to pair a new transmitter to your electric gate receiver.
To do that, the most convenient way is to use one working transmitter. Press and hold both keys and release them when a red LED starts. Now your electronics on an electric gate is waiting for a new transmitter to synchronize. Do the same on your new transmitter (press both keys and release them), then wait for about 5 seconds. Now just press the key to open or close the electric gate, and see if the remote is working. Receiver electronics goes off the synchronize mode and starts to work with all your remote devices.