UltraPower C4SF-HV Receiver [Compatible with FUTAxx S.Bxx 2.4G S-FHxx 4CH Receivers]

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1. KEY FEATURES: - As of May 2025, this is the latest version of the R4SF receiver with RC car specifications Adopts the highly requested "vertical plug connector" and "top operation switch."It has become much easier to install it on the chassis of an RC car.The antenna wires have also been changed, with one internal and one external, making it easier to handle (Reference: R4SF has two external. For three-dimensional maneuvers, two external cables are recommended).For setting instructions, please see the product description section or obtain the online instruction manual from the two-dimensional barcode attached to the product. - Other additional features Added a power connector for the receiver that was not present in the R4SF (the positive and negative positions are listed on the front of the receiver).In addition, the existing drip-proof function has been strengthened (*There is no drip-proof function in the connector area, etc.) - Compatible Transmitters Transmitters for ground models: 3PL, 3PV, 3PK, T3PRKA(3PRKA), 4PKS/4PKS-R, 4PLS, T4PX, T4GRS, 7PK.Aircraft model transmitters: T4YF, T6J, T6K, T8J, T10J, T14SG, T18MZ, T18SZ.*Cannot be used with TM-FH module.*Both operate in S-FHxx/FHxx protocol mode (this receiver does not have a telemetry function) *Please note that we have not tested the operation of any transmitters other than those listed and are not eligible for operation guarantee or support.*Please note that this is not compatible with JR receivers. - Others Fail-safe compatible.S.Bxx output is also possible on the 4th channel (not available when using analog servo) - Specifications Weight: Approximately 8g including antenna (Reference: Nominal 8g.Actually measured approx. 6.5g including antenna), Size: Width 35 x Depth 24 x Height approx. 7 mm (connector part height approx. 12 mm), Voltage range: 3.6 to 8.5 V, Operating current: Maximum 60 mA, 45 mA under link, Operating temperature:-10~70 degrees, latency: 13.6mS or 20.4mS, sensitivity: about -95dBm

2. PRODUCT DESCRIPTION: ✅ [Setting method] ① Binding procedure - Turn on the S-FHxx/FHxx transmitter (transmitter) and hold it 0.5-1 meters away from the receiver.- While pressing the F/S button on the ULTRAPOWER-C4SF-HV receiver, connect the battery to the receiver.- If you connect the battery while pressing the F/S button on the receiver, the red LED will turn on while searching for a signal, and the green LED will turn off.When the binding is successful, the red LED turns off and the green LED turns on.② Failsafe settings.With C4SF-HV, if the S-FHxx/FHxx transmitter side has a fail-safe function, it is possible to set the fail-safe function in the same way as the FUTAxx receiver.We recommend setting the failsafe function before use.For example, you can automatically stop the throttle action of radio-controlled equipment to prevent the model from flying or driving out of control.(Please note that it does not always succeed, and even if it works, the effect may be weak depending on the situation.) ③S.Bxx output function setting There are two operating modes of this receiver: special mode and normal mode.In special mode, S.Bxx output function is added to the 4th servo channel.(Other channels 1 to 3 remain unchanged.) *How to switch modes - If the receiver and transmitter are linked, turn off the power to the transmitter.- When the LED on the receiver turns red, press and hold the button on the receiver for more than 6 seconds (at most 10 seconds or less), and when you release the button, the green LED will flash.- Press the button down again and the receiver will return to red.The mode will now change between special mode and normal mode.If the green LED blinks slowly, it means the transition from normal mode to special mode.When the green LED blinks quickly, it means the transition from special mode to normal mode.Note: When the receiver is bound, it will be in normal mode.Even if you have already set it to special mode, it will become normal mode after rebinding.✅ [Servo selection guide] When connecting an analog servo to the receiver, please use normal mode.✅ [Checking the signal level] Under normal operating conditions, you can check the signal strength (radio wave status) by checking the lighting status of the two-color LED.We recommend checking the operation in advance when visiting a place for the first time or under unusual signal conditions (such as when the weather is bad or there are more devices emitting radio waves).✅ [S.Bxx port compatible servo/gyro] When S.Bxx is set, the target connection port can only be used for S.Bxx compatible servos.

3. PRODUCT DIMENSIONS & WEIGHT: - Weight: 0.01 kg - Dimensions: 8.7 x 8.0 x 1.6 cm

4. SPECIFICATIONS: