5pcs dt wireless

5pcs HC-05 Wireless Bluetooth Serial Module With Baseplate For Arduino Note: This module does not suitable for IOS system. Pin serial port descriptions: PIO8 connect LED, indicates the status of working, after powered the module flashing, different states in different flashing intervals. PIO9 connect LED, indicates successful connecting module, after successful mating bluetooth serial port, LED long lights. PIO11 state switch pin (high level) -> AT command response to the work state, low level or dangling -> Bluetooth regular work status. On module with a reset circuit, re-power to complete the reset. Main module setup steps: 1. PIO11 set high. 2. Power ON, the module into the AT command response status. 3. HyperTerminal or other serial tool, set the baud rate 38400, 8 data bits, 1 stop bit, no parity, no flow control. 4. Serial send characters "AT + ROLE = 1 r n", successful return "OK r n", which r n for carriage return. 5. PIO set low, re-power, module as the main module, automatic search from module to establish a connection. Feature: 6V - 4.5V power supply; Support connect Android phones with Bluetooth; The default baud rate: 9600 can be modified according to the data sheet; Package included: 5 x HC-05 Wireless Bluetooth Serial Module

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Function: This item make the sound around the microphone into the FM radio, and transmit out to achieve pickup and wireless radio FM transmitter, the launch frequency is adjustable, the core board green components is the adjustable capacitor, change the adjustable capacitor can change Launch frequency, adjustable range covering 88-108MHZ GB FM band. You can use the radio and the phone (the phone with the headset line to do the antenna sensitivity is poor, is not recommended as a receiver) as a receiver! It is widely used in voice pickup transmission, audio MIC, the elderly and children sleep monitoring, etc. need to pick up the sound of the occasion! Features: This item has unparalleled wide voltage working range from 0.7V to 9V. It launch pure, spurious signal, the suppression is only -60dBc. Parameter: Operating voltage: 0.7V-9V Frequency regulation range: 88-108MHZ (default 100MHz) Launch distance: 9V work, the use of 70 cm antenna, open space, launch distance of 50-100 meters The relationship between the operating voltage (volts) and the supply current (MA) and the transmitted power (dBm) is as follows: 9V, 24 Ma, 10.2dBm (i.e. 11 MW) 8V, 21 Ma, 9.5dBm 7V, 19 Ma, 8.5dBm 6V, 17 Ma, 7.1dBm 5V, 14 Ma, 6.1dBm (about 5 MW) 4V, 12 Ma, 4.5dBm 3V, 9 Ma, 2.2dBm 2V, 6 Ma, -1dBm (about 1 MW) 1.5V, 4.2 Ma, -4dBm (about 0.5 MW, general home environment emission enough, green radiation small) 1V, 2.4 Ma, -9dBm 0.7V, 0.9 Ma, -20dBm (i.e. 0.01 MW) Wiring method: The back of the core panel is labeled +, - and ANT, representing the power positive, negative, and antenna ends. The antenna generally soldered a 0.7 meter long short wire on will be OK, which is very easy! Package included: 5 x FM Wireless Microphone Pickup Wireless Audio Transmitter

5Pcs Socket Adapter Module Board For 8 Pin NRF24L01+ Wireless Transceiver Module Specification: Voltage: 3.3V It's for 8 Pin NRF24L01+ Module A simple socket board which is for NRF24L01 wireless module On-board AMS1117-3.3 chip It can be used with NRF24L01 wireless module Dimension: 26 x 19 x 12mm Note: Wireless module operating voltage is generally 3.3V, while the ordinary 51 microcontroller 5V, this module is wireless module with 51 single system board used in conjunction. Data Link: https://pan.baidu.com/s/1o6ug0yu Package included: 5 x Wireless Socket Adapter Module Board

5Pcs HC-12 433 SI4463 Wireless Serial Module Remote 1000M With Antenna Note: HC-11 cannot communicate with the HC-12, they work independently, in pairs Features: Supply voltage: 3.2V~5.5V. (If the module you want to work long hours in the emission state, it is recommended that when the supply voltage exceeds 4.5V threaded a 1N4007 diode to prevent module built-in LDO heated) Default address range (open field test): About 600m (maximum communication distance adjustable reach 1000m, the baud rate is 5000bps) Default idle current: 16MA (In different working modes operating current is different) Module dimensions: 27.8 x 14.4 x 4mm Operating frequency range: 433.4-473.0MHz, up to 100 channels of communication The maximum transmit power: 100mW (settable) Module support software upgrade Default factory settings: Mode FU3, baud rate is 9600bps, communication channels CH001 (433.4M) Package included: 5 x HC-12 433 Serial module AT command set:   Module parameters, AT command set AT command is used to set the parameters of the function module and switching modules need to exit the setting mode after setting to take effect. Meanwhile, modify the parameters and functions, power-down is not lost.   Enter the command mode: The first entry mode - normal use (has the power) in the first 5-pin "SET" is set low; The second mode of entry - power, 5th pin "SET" again first set low on power. Both methods can make the module into AT command mode, release ("SET" pin is not connected low) to exit command mode. After the exit command mode, if you change the module function, the function will be cut to the appropriate state. The second way is fixed in serial format 9600, N, 1 into the AT.   Instructions: 1. AT Test instructions Example: Send module commands "AT", the module returns "OK".   2. AT + Bxxxx Change the serial port baud rate command. You can set the baud rate is 1200bps, 2400bps, 4800bps, 9600bps, 19200bps, 38400bps, 57600bps and 115200bps. The factory default is 9600bps. Example: Set the module serial port baud rate is 19200bps, please send module command "AT + B19200", the module returns "OK + B19200".   3. AT + Cxxx Change the wireless communication channel, selectable from 001 to 127 (more than 100 radio channels after the communication distance not guaranteed). The default value is 001 radio channels, operating frequency is 433.4MHz. Step channel is 400KHz, the operating frequency of the channel 100 is 473.0 MHz.   Example: Set module to channel 21, please send module command "AT + C021", the module returns "OK + C021". After exiting the command mode, the module in the first 21 channels, operating frequency is 441.4 MHz. Note: Because the wireless receiver module sensitivity HC-12 is relatively high, the baud rate is greater than when air 58000 bps, 5 must be shifted to the adjacent channel use. When the air baud rate is not greater than 58000 bps, if the short distance (10 meters) communication, but also need to stagger five adjacent channel use.   4. AT + FUx Change the module serial pass-through mode, there FU1, FU2 and FU3 three modes. Module default mode is FU3, two serial pass-through mode module must be set to the same communication. See detailed above, "wireless serial pass-through" part. Example: Send module commands "AT + FU1", the module returns "AT + OK".   5. AT + Px The default setting is 8, maximum transmit power, communication distances. Transmit power level is set to 1, the minimum transmission power. In general, the transmission power of each drop 6dB, communication distance will be reduced by half. Example: Send module commands "AT + P 5", the module returns "OK + P5". After exiting the command mode, the module transmit power is +11 dBm. Package included: 1 x HC-12 module

5pcs DIY 3-Tube Wireless Microphone Kit Wireless Microphone Module Electronic Manufacture Kit

5Pcs ESP8266 ESP-12 Remote Serial Port WIFI Transceiver Wireless Module Description: It run LWIP 802.11 bgn WIFI Direct (P2P),SOFT-AP Built-in TCP/IP The AT command is perfect,efficient,concise Support three modes: AP, STA and AP+STA coexistence mode Package included: 5 x ESP-12 Remote Serial Port WIFI Transceiver Wireless Module