GX-031 2.4GHz FHSS-4 4-Channel Receiver (Sanwa/Airtronics)

Specifications:
Nominal Input Voltage: 4.8-7.4V
Weight: 0.095oz (2.7g)
Dimensions: 1.00×0.731×0.34 in (25.5×18.5×8.5mm)
Frequency: 2.4GHz FH3/FH4 Selectable Via Transmitter
Fail-Safe Support: Yes (All Channels)
Battery Voltage Fail-Safe Limit: 3.5-5.0V (FH3) / 3.5-7.4V (FH4)

Dimension:-
Length: 25mm
Width: 18.2mm
Height: 8.7mm (Plugs included)