The Retract/gear failsafe device goes between the receiver and gear servo and will help prevent a belly landing due to an air leak on all airplane models with an air retract system. In the event of an air leak, the Failsafe system will lower the gear down at preset pressure before the system loses all the air. Another nice feature of this device is it prevents an accidental gear-up when the transmitter is turned on and the gear switch is in the up position.
Programming couldn't be simpler. Simply set your gear in the down position, pump up the pressure to the minimum level that your gear operates reliably and press a button. Done.
Prices:
£135