Upgrade your FMS model with the FMMSEQ6SP51 6 Second Landing Gear Door Sequencer. Designed specifically for the P-51 aircraft, this multi-color sequencer controls the opening and closing of your landing gear doors with a 6-second delay. Compatible with electric-powered models in scales of 1:14, 1:12, 1:8, and 1:10, this product is ideal for the serious RC plane enthusiast. Made in China, this landing gear door sequencer is perfect for those aged 12-16 years and 17 years and up. Add an extra level of authenticity to your FMS model with this perfect accessory.