E290-400T20S module de port série sans fil à puce RF PAN3060 433 MHz prend en charge la mise en réseau automatique des relais et la mise à niveau IAP des commandes AT
[Puissance de transmission]：20 dBm
[Distance de communication]：5 km
[Tarif aérien]：2,4k～62,5kbps
[Taille du produit]：26*16mm
[Poids du produit]： 2,37 ± 0,05 g.
[Introduction]：E290-400T20S est un module de port série sans fil (UART) basé sur la puce RF PAN3060, avec plusieurs modes de transmission, fonctionnant dans la bande de fréquence (410,125 ~ 493,125 MHz) (par défaut 433,125 MHz), utilisant la technologie d'étalement de spectre ChirpIoT™, sortie de niveau TTL.
Official Store
| Pin number | Pin name | Pin direction | Pin usage |
| 1 | GND | - | Module ground wire |
| 2 | GND | - | Module ground wire |
| 3 | GND | - | Module ground wire |
| 4 | GND | - | Module ground wire |
| 5 | M0 | input(pull-up) | Cooperate with M1 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 6 | M1 | input(pull-up) | Cooperate with M0 to determine the 4 working modes of the module (cannot be left floating, can be grounded if not used) |
| 7 | RXD | enter | TTL serial port input, connected to the external TXD output pin; |
| 8 | TXD | output | TTL serial port output, connected to the external RXD input pin; |
| 9 | TO | input Output | Used
to indicate the working status of the module; it is forbidden to be low
when powered on, otherwise it will enter the firmware upgrade mode; The user wakes up the external MCU and outputs low level during power-on self-test initialization; (can be left floating) |
| 10 | VCC | - | Module power supply positive reference, voltage range: 2.6~5.5V DC |
| 11 | GND | - | Module ground wire |
| 12 | RST | - | Module reset pin, pull low for 1ms to reset |
| 13 | GND | - | Module ground wire |
| 14 | NC | - | Floating, not grounded |
| 15 | NC | - | Floating, not grounded |
| 16 | NC | - | Floating, not grounded |
| 17 | NC | - | Floating, not grounded |
| 18 | NC | - | Floating, not grounded |
| 19 | GND | - | Module ground wire |
| 20 | GND | - | Module ground wire |
| 21 | ON | - | antenna |
| 22 | GND | - | Module ground wire |