MK321BT Bluetooth 5.1 3 Keys Custom Keys Game Office PS Clip Macro Programming Keypad Features: 1.Power Supply: inner 230mAh Li-Battery charging via USB Type-C cable 2. Comfortable buttons, multi-system compatibility 3. The multi-function can be customized through the software, which can be triggered at one touch 4. Suitable for office, games, multimedia and other occasions 5. The hand feels light and comfortable, and the non-stick tape quickly rebounds when pressed, which can be used for a long time 6. Simple operation, no need to drive, connect with data cable, after saving the software settings, it can be used 7. Game: One-click to realize multiple sets of commands for games; Office: One-click to open multi-layer folders; Network: One-click to open favorite pages or APPs; Design: One-click to realize combination key commands 8. Comfortable buttons, rounded arcs, ergonomic, fit the finger pulp 9. Set the button function through the software and save it to take effect 10. There are LED lights under the buttons, and various lighting effects can be set through the software 11. The green shaft button, the percussion is crisp, the ear is loud and crisp, and the mechanical sense is strong 12. Anti-slip foot pads can make the product stand more stable Parameter: 1. Material: plastic 2. Number of keys: 3 keys 3. Interface: USB 4. Line length: 1.5 meters 5. Shaft body: green shaft 6. Function: keyboard, mouse, multimedia, string, game, macro definition 7. Button life: 50 million times 8. Dimensions: 7.5 x 3.7 x 2.8cm 9. Weight: about 32g
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Integrated with ESP32-WROOM-32D modules, offering robust WiFi and Bluetooth connectivity. Ideal for IoT applications with support for NodeMCU-32, enhancing your for Arduino projects. Compatible with for WeMos D1 Mini Pro V3.0 and other ESP8266 based development boards. Includes a variety of ESP8266 modules like ESP-01, ESP-01S, ESP-07, ESP-12E, ESP-12F, and more for diverse development needs. Supports serial wireless communication and is equipped with CH340, CP2102, and CH9102X USB drivers for easy programming. Features a 433Mhz HC-12 SI4463 Wireless Serial Port Module for extended range up to 1000m, replacing traditional Bluetooth connections. Colour:As Shown Material:Plastic Package Contents: 1 * Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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4 x 5 Matrix keyboard for arduino projects. Panel Size: 75 x 85mm. Storage Humidity_70% – 90%. Cash on collection. Credit account for Universities and Research Centres are subject to checks.
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RFID2 is a radio frequency identification unit. Built-in WS1850S chip, working frequency is 13.56MHz. Supports reading card, writing card, recognition, recording, and encoding RF card Multiple functions such as authorization and authorization. Use magnetic field induction technology to realize non-contact two-way information interaction, read and verify the information of proximity cards. It can be used in access control systems, check-in systems, warehouse goods entry and storage, and community vehicle entry and exit registration needs Application scenarios for information verification. RFID2 compared to the previous generation RFID UNIT only makes the replacement of read and write IC (RC522→WS1850S), there is no difference in function. Product Features 1. Operating frequency: 13.56 MHz 2. I2C data rate: Fast mode: up to 400 Kbit/s; High-speed mode: up to 3400 Kbit/s 3. ceiver buffer: 64 bytes 4. Supported protocols: ISO14443A, MIFARE and NTAG 5. Working temperature: -20℃-85℃ 6. Data storage:Greater than 10 years 7. Reading distance:Less than 20 mm 8. Development platform: for Arduino, for UIFlow(Blockly, Python) 9. 2x LEGO compatible holes Applications: Smart home access control system Vehicle management Smart portation Smart bookshelf Colour:White Material:Plastic Package Contents: 1 * RFID sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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The keypad can be stuck to a hard surface using the sticky pad provided to provide a hard backing to the keypad – making it easier to press the button. The keypad is wired via a flexible ribbon to a 2 way header socket.
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Keyless Entry Door Lock With Keypad, Smart Lock Electronic Locks For Front Door Touchscreen Keypads Door Lock Automatic Lock Support 2000 Users Features: Multiple Access Ways--- Supports up to 2000 user capacity, 3-6 digit password, or a Card + password option. Includes 3 PCS ID keyfobs. can use the access control keypad to add and delete user card or password, provide more convenience for family, or trusted colleagues. Easy to Use--- The access control keypad is single door multifunction standalone access controller, support Wiegand 26 input or output, can be as a standalone reader or keypad, full programming from the keypad, can drive the electric lock, support garage door/gate opener, swing/sliding gate opener. Sturdy Rugged Duty Vandal Proof --- Strong alloy electroplated anti-vandal case, The circuit board is completely encapsulated in epoxy to be , IP68 waterproof, It is suitable for mounting either indoor or outdoor in harsh environments. Light Indication Modes, Backlight Function--- Green, Yellow, Red light display different working status and built in buzzer reminder. When you the digital panel, blue backlight features keys, you can find and enter the password numbers even in dark locations or night. High Security Widely Used--- Without the use of some computing intermediate, password will not be stolen. Suitable for apartment, office, access control, off-limit area, hotel locks, school campus access, identification, parking lot entry, etc. Deny entry to unauthorized personnel, property protection. *** It is a wired access control keypad Product Multiple users, Multiple Access Ways --- Supports up to 2000 user capacity, 3-6 digit password, or a Card + password option. Includes 3 PCS ID keyfobs. can use the access control keypad to add and delete user card or password, provide more convenience for family, or trusted colleagues. Set-ups, Easy to Use --- The access control keypad is single door multifunction standalone access controller, support Wiegand 26 input or output, can be as a standalone reader or keypad, full programming from the keypad, can drive the electric lock, support garage door/gate opener, swing/sliding gate opener. Sturdy Rugged Duty and Vandal Proof --- Strong alloy electroplated anti-vandal case, The circuit board is completely encapsulated in epoxy to be , IP68 waterproof, It is suitable for mounting either indoor or outdoor in harsh environments. Light Indication Modes, Backlight Function --- Green, Yellow, Red light display different working status and built in buzzer reminder. When you the digital panel, blue backlight features keys, you can find and enter the password numbers even in dark locations or night. materialalloy Product list: 1x access control
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The keypad can be stuck to a hard surface using the sticky pad provided to provide a hard backing to the keypad – making it easier to press and use the keys. The matrix keypad is wired via a flexible ribbon to an 7 way header socket.
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This ultrasonic ranging sensor is a non-contact distance measurement module with stable performance and high ranging accuracy featuring much smaller blind zone, wider sensing angle and a certain penetration power compared with other similar sensors. It can detect the distance between the ultrasonic wave and the target. Widely used in robot obstacle avoidance, parking management system, automatic control and so on. Average Current:Less than 8mA Response Time:100ms Detecting Range(Flat object):3-450cm Operating Temperature:-15-60℃ Reference Angle:60º Waterproof Grade:IP67 Measurement accuracy:±(1 + S*0.3%) Type:PWM pulse width/UART serial port/RS485 Colour:Black Material:Plastic Package Contents: 1 * Ultrasonic Ranging Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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The AE11A04 DTMF tone generators are designed. Audio 1: This is a universal interface that connects most audio devices. Audio interface : 2x 3.5mm audio jack socket. Power interface : 2.1mm x 5.5mm Female Male DC Power Plug.
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Usage Tips: [Features] 1. Made of high quality plastic 2. Waterproof. Can be used directly outdoors and under the rain. 3. Sun-proof. Can be used even in very bad weather. 4. Suitable for many kinds of access control, fingerprint access control, length less than 13cm, width less than 8cm. [Product Information] Product name: Rainproof cover swipe card reader Product material: plastic Product size: outside diameter 15X10.4X9(cm) inside diameter 13.5X8.9X8.4(cm) Packing list (provided when purchasing the product) Rainproof cover X1 Please understand that: 1. Due to the long shipping time, the items may be damaged during transportation, if the items are damaged, please immediately send us a message through the official website and then send a comment, I will solve the problem for you. 2. Due to manual measurement, the size may have 1-3cm error. 3. 3. Colors may vary from monitor to monitor.
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1 x Matrix 8key Keyboard Module. Color: Blue. More convenient to use.
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AD8232 is an integrated front-end suitable for signal conditioning of cardiac bioelectrical signals for heart rate monitoring. An integrated signal conditioning module for ECG and other bioelectrical measurement applications. The device is designed to extract, amplify, and filter weak bioelectrical signals in the presence of noise from motion or remote electrode placement. The design allows an ultra-low-power analog-to-digital converter (ADC) or embedded microcontroller to easily capture the output signal. The AD8232 uses a two-pole high-pass filter to eliminate motion artifacts and electrode half-cell potentials. The filter is tightly coupled to the inst entation amplifier structure to achieve single-stage high-gain and high-pass filtering, saving space and cost. The AD8232 uses an unconstrained op amp to create a three-pole low-pass filter that eliminates additional noise. Users can select the cutoff frequencies of all filters to meet the needs of different types of applications. To improve common-mode rejection of system line frequencies and other undesirable interference, the AD8232 includes an amplifier for driven lead applications such as right-side drive (RLD). The AD8232 includes a fast recovery feature that reduces the long settling tail of high-pass filters. If there is a signal change in the amplifier rail voltage (such as a lead disconnection condition), the AD8232 will automatically adjust to a higher filter cutoff state. This feature allows the AD8232 to achieve fast recovery, so that valid measurement values can be obtained as soon as possible after the leads are connected to the electrodes of the measurement object. The rated temperature range for guaranteed performance is 0 ℃ to 70 ℃, and the operating temperature range is -40 ℃ to +85 ℃. material: plastic Color as shown Package Contents: 1 x Development board 1 x line Only the above package content, other products a
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AD Keyboard module allows you to use an analog port to read the five key states, save for the IO port, With sensor expansion board can be done using multiple buttons for interactive work. 1 piece AD Keyboard Five-Key Module.
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EASY AND EASY OPERATION: The multifunctional garage door opener control panel replaces the standard garage door control buttons, providing a simple and user-friendly experience. Compatibility and Convenience: This control panel is compatible with green, red and learn button openers, making it very convenient to use in low light conditions. Lock button keeps your portable remote safe. Garage Light Control: Light buttons provide easy control of your garage light, allowing you to turn it on or off at your convenience. Easy to install: First, pass the wires through the holes of the back cover, then use the included screws to fix the back cover to the wall studs (do not overtighten). Finally, connect wires to the terminals and snap the circuit board onto the back cover. Broad Compatibility: Compatible with models, including Green Learning Button (Billion Code, 390MHZ), Red/Orange/Amber Learning Button (Security+, 390MHZ) and Learning Button (Security+, 315MHZ). Colour:black Material:plastic Package Contents: 2 x garage door opener Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.
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Design: 3x4 matrix( 0-9, , # ). 2 X Matrix Keyboard. 12buttons matrix. Main color: Black. Fit for professional prototype, hobby or university electronics projects.
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