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sistema de Control de acceso iButton DS1990A Guard Tour Patrol Systems with Data Downloader +20pcs Checkpoint

Durable alloy case that resist drops,erosion and waterproof ,stainless steel contactor..
Built-in silicone rubber coat,shock resistant and waterproof ,internal circuit board epoxy hardened..
One-time storage capacity of up to 10,000 recordings(expansion).
Note: Software support all windows system( 32bit & 64 bit).

Very typical contact guard tour system,Durable alloy case,Waterproof and drop proof,Can be used in harsh environment..
Communication by USB with data downloader. Software easy to use, have video guide for you, easily setup the system.Note: Software support all windows system( 32bit & 64 bit).
Low power consumption, Long battery life, Support 350000 continuous readings. Automatic alarm when full charged or lower power.
LED and buzzer for prompt success read,Special design to prevent repeated readings.We will do express shipping to you, take 6-9 days normally to USA..
Easy carrying. Easy operate, touch and read, 20PCs check point+5 pcs guard button, full system.

All the music published for free and fair use in this music downloader for kindle fire free.
Search with song artist or album and find them later after downloading using any File Explorer..
Music downloader pro is so simple and easy to use.
Free music apps that don’t need internet.
High quality sounds with every music download.

0-26V 0-6A voltage & current measurement. 128*160 1.77’TFT. 4.5 digits reading for voltage and current. 0.1% maximum gain error for both voltage and current. Capacity/Energy accumulator. PD(with PPS), QC2.0, QC3.0, QC4.0, Huawei SCP, SSCP, FCP, Samsung AFC, VOOC, Super VOOC 65W trigger for charger testing..
Powerful PC software: Data logging up to 1000sps. Lua program downloader. VBUS ripple viewer(3.2Msps). PD listener for device diagnosis. Fast-charge trigger and external load module can also be accessed. All functionalities can be activated simultaneously for advanced test requirements..
Lua Programmable: Lua interpreter integrated, provided with various APIs, detailed documentations (Look up at point 1). Make access to almost all hardware with your own program. Scripts can be set to run on boot. Internal 12Mbytes memory can be used to store scripts, and can be used as output storage of scripts (Standard file operation supported)..

ESP8266 test frame burner development board work Voltage: DC 5V.
The board supports firmware one-click download function and adds programming.
Micro USB interface, this module is very easy to program..
The ESP8266 test board code burner flash downloader compatible with ESP-01 ESP-01S ESP-07 ESP-07S ESP-12E ESP-12F ESP-12S ESP-F..
ESP8266 code burner firmware downloader all IO ports have been drawn out and can be used as minimum system development board or small batch burning fixture..

ESP8266 ESP-12E WiFi serial module built-board PCB antenna, 4M bytes Flash.
Frequency range: 2.4GHz-2.5GHz (2400M-2483.5M)..
The ESP8266 test board code burner flash downloader compatible with ESP-01 ESP-01S ESP-07 ESP-07S ESP-12E ESP-12F ESP-12S ESP-F. Micro USB interface, this module is very easy to program..
ESP8266 code burner firmware downloader all IO ports have been drawn out and can be used as ZUI small system development board or small batch burning fixture. The board supports one-click firmware download function, and add burning..
Easy to use: ESP8266-12E is a combined products,it's very convenient to operate(Need to solder 3V regulator by youself )..
ESP8266-12E is an enhanced version ESP8266-12, improving the external circuit, enhanced impedance signal output is better, whether it is stable or anti-jamming capability , have been greatly improved..