This is the Futaba R324SBS 2.4GHz TFHSS 4-Channel SBus-2 Receiver.
FEATURES:
Designed for use with Futaba surface transmitters using TFHSS
technology
TFHSS bidirectional telemetry
SBus-2
Normal/high-speed modes (auto detection), normal mode accepts any
type of servo, high-speed mode only accepts digital servos
including BLS servos
High voltage
Dual antenna diversity
Battery fail safe
One year limited warranty through Hobby Services beginning at date of
purchase
INCLUDES:
Futaba R324SBS 2.4GHz TFHSS 4-Channel SBus-2 Receiver
SPECS:
Operating Voltage: 3.7-7.4V
Size: 1.4 x 0.91 x 0.49" (35.1 x 23.2 x 12.5mm)
Weight: 0.29oz (8.3g)