This is the Futaba R314SB 2.4GHz T-FHSS 4-Channel Telemetry Receiver.

FEATURES: Used with the Futaba 4PLS 2.4GHz T-FHSS Radio and 3PV Radio

INCLUDES: Futaba R314SB 2.4GHz T-FHSS 4-ch Receiver

SPECS: Power Requirement: 4.8 - 7.4V battery (dry cells cannot be used) Receiving Frequency: 2.4GHz System: T-FHSS (auto detection) Dimensions: 35.1 x 23.2 x 8.5mm Weight: 6.6g