User Manual

(2) GR-4 Receiver
Channel
2 CH
Frequency
2400~2483.5 MHz
Modulation
FHSS
Operating Voltage
3.6~8.4V
Operating Output Power
60mW
Operating Current
35.0mA
Display
One LED (red)
Extra Function
available (Port3)
Fail Safe
Free/Fail safe
Temperature Sensor Warning
(T/V Connector) Port4 (50~150℃)
Low voltage warning alarm
(T/V Connector) Port4 (1.0~25.5V)
Telemetry Sensor
(B/T Connector) Port3
Size
30x21x14.3 mm ( 1.18x0.82x0.56 in. )
Weight
app. 5.5 g (0.19 oz)
Product description (Mechanical Parts)
HoTT (Hopping Telemetry Transmission)
The use of up to 35 hopping channels provides advanced reliable operation while keeping from any
external interference. This HoTT radio system gives user real-time information on various useful data
such as user model’s RPM, voltage, temperature, user programmable warning, and so on.
X-4S HoTT Transmitter comes with GR-4 2Ch receiver.