1．Ultra-low power consumption, less than 25mA in receiving mode , less than 1uA in sleep mode .

2.  The battery can be as supply (such as lithium batteries).

3.  High sensitivity, high output power (up to 400mW or more at 3.6V)

4.  8 optional channels, optional communication rate.

5. Small size, easy installation, easy to embed user equipment.

6. The whole module has good shielding performance. When used in embedded, it can effectively prevent mutual interference between devices.

Wireless call system, wireless queuing machine, medical vessel;

Wireless POS, PDA;

Wireless data transmission, automated data acquisition system;

Wireless LED display, answering device, etc., intelligent transportation;

                                             KYL-500B Interface schematic

 Table: Channel and RF Frequency

1、When Module A transmits data and module B receives data

 That is, the delay time that the terminal A (connected to the module A) sends data to the terminal B (connected to the B module) by wireless. Which be fixed to the time for transmitting 15 bytes. This time is related to the air baud rate, but not to the interface baud rate. details as follows:

 
Table: Baud rate and delay time

2、Module transceiver conversion time

 That is, the time for converting from the receive state to the transmit state, or from the transmit state to the receive state. During this time (100us), the module cannot receive air data.

Power supply：

    +3.3~6.0V DC,According to the needs of users, it can share the power with other devices, but please select a power supply with a better ripple factor.If conditional, 5V regulators can be used to supply power alone. It is recommended not to use the switching power supply. If you must use the switching power supply, please pay attention to the interference due to switching pulse.In addition, if there are other devices in the system equipment, it must be grounded reliably. Otherwise, it can be self-contained, but it must be completely separated from the city electricity. The maximum output current of the power supply should be more than 1.5 times the maximum operating current of the module.