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HOME > PRODUCTS > ASK MODULES > STX888 SRX888 : WIRELESS SIGNAL DUPLICATION MODULE
STX888 SRX888 : Wireless Signal Duplication Module
- This is a wireless signal duplication module that can remotely output any same waveform.
- The module can transmit any digital waveform (such as pulse or serial waveform…) with a frequency below 9.6KHz. The module group is composed of a transmitting module (STX888) and a receiving module (SRX888). The waveform input to the DATA pin of the transmitting module will be output on the DATA pin of the receiving module.
- STX888 and SRX888 is manufactured and tested strictly using lead-free process and complies with RoHS and Reach standards.
STX888 Electrical Specifications (Supply Voltage: 5V, 25 ℃)
| Parameter | Min. | Typ. | Max. | Unit | Conditions |
| Operation Conditions | |||||
| Supply Voltage | 3.3 | 5.0 | 6.5 | V | |
| Operating Temperature Range | -40 | 25 | +85 | ℃ | |
| Current Consumption | |||||
| TX current | 370 | mA | @27dBm | ||
| Standby Current | < 10 | mA | Standby, no transmission | ||
| Sleep Current | < 10 | uA | |||
| RF Parameters | |||||
| Frequency Range | 428.92 | 433.92 | 443.92 | MHz | |
| RF power | 26 | 27.5 | 28.5 | dBm | @5V |
| Wake up time | - | 4 | - | ms | |
SRX888 Electrical Specifications (Supply Voltage: 5V, 25 ℃)
| Parameter | Min. | Typ. | Max | Unit | Conditions |
| Operation conditions | |||||
| Supply Voltage | 3.3 | 5.0 | 6.5 | V | |
| Operating Temperature Range | -40 | 25 | +85 | ℃ | |
| Current consumption | |||||
| RX Current | < 31 | mA | |||
| Sleep Current | < 10 | uA | |||
| RF parameters | |||||
| Frequency Range | 428.92 | 433.92 | 443.92 | MHz | |
| Wake up time | - | 4 | - | ms | |
Note: Although the power supply of the transmitting module and the receiving module is 5V, the IO level of the module is 3.3V TTL, and the level compatibility should be considered when using.
| Special Function | Signal Duplicated module |
Features
- Arbitrary waveform transmission
- Low signal distortion
- Simple to use, without any setting and programming
- Long-distance communication (open> 500M)
- Can customize more power,longer distance
- Software and hardware multiple protection, can work stably in complex environment
- Small delay (4ms)
- 16 frequency channels are optional to prevent wireless signal conflict
- GFSK modulation, strong anti-interference ability
- Transmit and receive ultra-low power consumption
- Industrial grade application (-40～+ 85 ℃)
STX888 Pin Definitions:
| Pin NO. | Definitions | Input/Output | Pin Description |
| 1 | VCC | Positive Power supply | |
| 2 | GND | Power ground | |
| 3 | CS | I | Module enable (pull down to sleep, pull up or float to work) |
| 4 | DATA | I | Data input pin |
| 5 | LED+ | O | connect to positive pole of LED |
| 6 | LED- | O | connect to negative pole of LED (internal 1K resistor in series) |
| 7 | D1 | I | Frequency channel selection |
| 8 | D2 | ||
| 9 | D4 | ||
| 10 | D8 | ||
| 11 | GND | Power ground | |
| 12 | GND | Antenna ground | |
| 13 | ANT | Connect with 50 ohm coaxial antenna |
SRX888 Pin Definitions:
| Pin NO. | Definitions | Input/Output | Pin Description |
| 1 | VCC | Positive Power supply | |
| 2 | GND | Power ground | |
| 3 | CS | I | Module enable (low level sleep, sleep current is less than 5uA, default high level) |
| 4 | DATA | O | Data input pin |
| 5 | LED+ | O | Connect to positive pole of LED |
| 6 | LED- | I | Connect to negative pole of LED (internal 1K resistor in series) |
| 7 | D1 | I | Frequency channel selection |
| 8 | D2 | ||
| 9 | D4 | ||
| 10 | D8 | ||
| 11 | GND | Power ground | |
| 12 | GND | Antenna ground | |
| 13 | ANT | Connect with 50 ohm coaxial antenna |
STX888 dimensions:
SRX888 dimensions:
