[Working frequency band]：410~493MHz

[Transmission power]： 37dBm

[Communication distance]：20km

[Receive gain]：15dBm

[Product size]：45*30mm

[Introduction]：E21-400G37S is a pure hardware RF mid-power amplifier (PA) launched by Chengdu Ebyte Company, with a maximum output power of 37dBm, covering a frequency range of 410-493MHz, and a built-in LNA low-noise amplifier in the module, which greatly improves the wireless communication. communication distance.