Wiring Diagram

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Jiangsu JWT Electronics Shares CO.,Ltd.

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Eight.Application wiring diagram

3.3V System application circuit

Nine.PCB-layout and installation considerations

Module considerations：

1. No line under the antenna, keep the antenna part clear。

2. 3.3V power supply should be kept stable and clean, If the noise or interference of 3.3V

power supply is relatively large, it is suggested that the RF module should be supplied after the

RC or LC filtering.

3. The RF shield should be well grounded to improve the anti-interference ability of the

module

4. Installation instructions：

a. Before installation, check whether the shield shape is intact and the logo is complete。

b. The module adopts the half-hole welding mode, and it is necessary to ensure that the

semi-hole welding position of the main plate is coincident with the half hole of the module to

avoid welding short circuit.

c. The welding position of the main plate and half hole shall overlap with the half hole of

Picture 8-1