DB9 Female Right Angle Connector PCB Mount Designed to work with the EIA/TIA 232 serial interface standard, which determined the function of all nine pins as a standard, so that multiple companies could design them into their products. DB9 connectors are commonly used for serial peripheral devices like keyboards, mice, joysticks, etc. Also, they are used on DB9 cable assemblies for data connectivity. DB9 is also used in many legacy devices that use the DB9 interface for serial communication. The connector module is a female right angle connector with solder cups. These DB-9 connectors are useful for a wide variety of electronics projects. DB-9 connectors are handy for connection points to projects and are commonly used for serial port connections on electronic and computer equipment. These are solder-cup style connectors. We also offer matching hoods. The hoods come with all the necessary hardware. Note: The color of the plastic insulation material on these connectors may vary from the picture. Possible colors are Black, Blue, and White. If you need a specific color, please call. Technically, the correct term for these connectors is DE9, although DB9 is more commonly used. Applications: Serial data transmission Data networks Instrument control Device management

DC 6V To 30V One Way Relay Module Wide voltage power supply (6 - 30v), supports micro usb 5.0v power supply, easy to use. With emergency stop function (“stop” button) and reverse polarity protection which can avoid burning by reverse connection. It is 6-30V 1-Channel Delay Power Relay Module with Onboard Adjustable Timing Cycle Switches with Digital LED display It is mostly used in Home Automation Delay Timer Control Switch Module Timer Controller. The Module operates at Operating voltage range of 6-30V, also it supports micro USB 5.0V power supply. Output capability: Can control the device within DC 30V 5A or AC 220V 5A. It can be applied to many fields as there is a wide range of application. What is Relay ? Explained in simple terms. Operation Mode: P1: Trigger signal, the relay is on “OP” time, and then disconnect; Within the “OP” time, proceed as follows: P1.1: the signal is triggered again, invalid P1.2: the signal is triggered again, re-clocking P1.3: Signal has triggered again, the relay is disconnected, stop the clock; P-2: Trigger signal, after the “CL” time is off, the “OP” time is on. When the timing is completed, the replay will be disconnected; P3.1: Trigger signal, after the “OP” time is on, the “CL” time is off, then cycle the above actions. If trigger signal within the loop, the relay will be disconnected and stop the clock. The number of cycles ( “LOP “) can be set. P3.2: No need to trigger the signal after powering up, the “OP” time is on, the “CL” time is off, then cycle the above actions; The number of cycles ( “LOP “) can be set. P-4: Signal holding function. If the signal is triggered, timing is cleared, the relay remains on; when the signal disappears, the relay will be off when the “OP” time is over; if another signal is triggered during timing, timing will be cleared. How to choose the time interval: parameter Introduction: OP power over time, turn off time CL, LOP cycle times (1-999 times, “—” is unlimited cycle) In the selection of parameter set interface mode, and press the STOP button to select the time. (1)xxx. if the decimal point is in some place, the time interval is s-1 999 s (2)xx. x is the decimal place is ten, the time interval is 0.1 s 99.9 s- (3)x. x. x is the decimal point are all on, the time interval is 1 min-999 min How to set the parameter: First, make sure relay operation mode According to the operating relay mode, the main interface (power module will flash current operating mode; standard mode P1.1, then come into the main interface); long press SET key two seconds and then choose and enter selection interface mode; by pressing UP, DOWN key to choose the mode setting  (P1.1 ~ P4) After selecting the mode, press short SET to set the corresponding parameter, then the parameter you want to set will flash (OP power in time; CL power off time; LOP cycle times, “—” is unlimited cycle ); by UP, DOWN to set the parameter value, support long press (increase or decrease quickly) and press slightly (increase or decrease of 1 unit); after setting the parameter value by short press the STOP key to choosing decimal place; choose the time interval (corresponding time interval is 0.1 s-999 min); Short press SET to set the current mode next parameter, the process is the same as above After the setting mode parameter, press and hold the SET button then hold the current configuration mode will flash, then go back to the main interface; define success parameter main interface: when the relay does not work, it will show “000” (no decimal point); the operating state relay, the screen has a decimal point Mode Select Interface: press and hold the SET key to enter; after setting, long-press the SET button back on the main interface Activate Relay Mode: NO: PO in power over time, the relay can be connected OFF: relay is not allowed to connect, when in the off state in short main interface press the STOP key to achieve turn ON and OFF, the current state will flash; then back to the main interface (this function is a function of a sudden stop, 1 key to turn off the relay) Sleep Mode: C-P Sleep mode: within 5 minutes, no operation; nixie tube will close auto display, and a function program well Note: Press and hold the STOP button for 2 seconds can achieve change from C-P to O-d; Current state will flash and then return to the main interface The relay contact is passive and electricity production; 1 channel has the control function on / off

-

The DC Jack Connector with Wire is a reliable and durable power connection solution designed for a wide range of electronic devices and DIY projects. Featuring a standard 5.5mm outer diameter and 2.1mm inner diameter barrel plug, this connector ensures compatibility with most common power adapters and equipment. The pre-soldered 12-inch (30cm) stranded copper wire with PVC insulation offers excellent conductivity and flexibility, making it ideal for prototyping, repairs, or custom power setups. Built for performance and safety, this DC jack connector supports up to 2A current and operates efficiently at 12V–24V DC, making it suitable for powering routers, CCTV cameras, LED strips, audio amplifiers, and other low-voltage devices. The robust nickel-plated brass contacts minimize resistance and prevent corrosion, ensuring long-term reliability. Its compact design and secure fit reduce the risk of accidental disconnections, providing stable power delivery in both indoor and light-duty outdoor applications. Whether you're an electronics hobbyist, technician, or engineer, this DC jack connector simplifies power integration without the need for soldering during installation. It is widely used in Arduino and Raspberry Pi projects, security systems, and portable gadgets. Easy to integrate and highly dependable, this connector is a must-have component for anyone working with DC-powered systems.

DC Power Female Plug Jack Adapter Connector DC Power Female Plug Jack Adapter Connector is for CCTV Camera which features a simple & professional appearance for power cabling. Easier for camera installation, save time, and more securer cable connection. No electrical tap, no splicing, and no crimping, but only a small screwdriver is required for this connector . Applications: Commonly used as CCTV Camera DC Power Connector.

DC Power Male Plug Jack Adapter Connector This is Male for DC Power Jack Adapter Connector Plug For CCTV Camera. Simple & Professional appearance for power cabling. Easy To Connect ,Power Plug features one power connector end. No need of cutting and soldering.

DC Rectangle Gear motor 12V 300 RPM with High Torque The DC Rectangle Gear Motor 12V 300 RPM with High Torque, also known as a square gear motor, is a compact and powerful motor designed for applications that require both speed and torque. This 300 RPM gear motor operates at 12V and delivers high torque output, making it ideal for robotics, conveyor belts, automation systems, and other mechanical projects. Its rectangular gearbox provides durability and easy mounting, making it a reliable choice for hobbyists and professionals alike. As a DC gear motor, it ensures stable performance and long operational life even under demanding loads. Applications: Pan/ Tilt camera Auto shutter Welding machines Water meter IC Card Grill Oven Cleaning machine Garbage disposers

Decade Counter IC - 74HC90 The 74HC Series 74HC90 Decade Counter IC having 4.75 to 5.25V Supply Voltage with 8mA Low Level and - 0.4mA High-Level Output Current. It is a simple counter, it can count from 0 to 9 cyclically in its natural mode. It counts the input pulses and the output is received as a 4-bit binary number through pins QA, QB, QC, and QD. The binary output is reset to 0000 at every tenth pulse and the count starts from 0 again. Used For Power amplifiers, Small-signal amplifiers, Operational amplifiers, Microwave amplifiers, RF and IF amplifiers, Voltage comparators, Multiplier. Pinout: Pinout of 74HC90 IC

Decade Counter/Divider IC - CD4026 The CD4x Series CD4026 consists of a 5-stage Johnson decade counter and an output decoder that converts the Johnson code to a 7-segment decoded output for driving one stage in a numerical display. These devices are particularly advantageous in display applications where low power dissipation and /or low package count are important. Inputs common to both types are CLOCK, RESET, & CLOCK INHIBIT; common outputs are CARRY OUT and the seven decoded outputs (a, b, c, d, e, f, g). Additional inputs and outputs for the CD4026 include DISPLAY ENABLE input and DISPLAY ENABLE and UNGATED "C-SEGMENT" outputs. A high RESET signal clears the decade counter to its zero counts. The counter is advanced one count at the positive clock signal transition if the CLOCK INHIBIT signal is low. Counter advancement via the clock line is inhibited when the CLOCK INHIBIT signal is high. The CLOCK INHIBIT signal can be used as a negative-edge clock if the clock line is held high. Antilock gating is provided on the JOHNSON counter, thus assuring proper counting sequence. The CARRY-OUT (C out ) signal completes one cycle every ten CLOCK INPUT cycles and is used to clock the succeeding decade directly in a multi-decade counting chain. The seven decoded outputs (a, b, c, d, e, f, g) illuminate the proper segments in a seven-segment display device used for representing the decimal numbers 0 to 9. The CD4026  outputs go high only when the DISPLAY ENABLE IN is high. The CD4026 series type is supplied in 16-lead dual-in-line plastic packages (E suffix), 16-lead small-outline packages (NSR suffix), and 16-lead thin shrink small-outline packages (PW and PWR suffixes). check out : CD4033 - 5-Stage Johnson Decade counter IC Pinout: Pinout of CD4026 Decade IC Applications: Decade counting 7-segment decimal display Frequency division 7-segment decimal displays Clocks, watches, timers (e.g. ÷60, ÷60, ÷ 12 counter/display) Counter/display driver for meter applications

Decade Up/Down Counter with Clear IC - 74HC192 The 74HC Series 74HC192 IC is an asynchronously presettable BCD Decade and Binary Up/Down synchronous counters, respectively. Presetting the counter to the number on the preset data inputs (P0-P3) is accomplished by a LOW asynchronous parallel load input (PL)\. The counter is incremented on the low-to-high transition of the Clock-Up input (and a high level on the Clock-Down input) and decremented on the low-to-high transition of the Clock-Down input (and a high level on the Clock-up input). check out : 4-Bit Binary Ripple Counter IC - 74HC93 A high level of the MR input overrides any other input to clear the counter to its zero state. The Terminal Count up (carry) goes low half a clock period before the zero counts are reached and returns to a high level at the zero counts. The Terminal Count Down (borrow) in the count down mode likewise goes low half a clock period before the maximum count (9 in the 192) and returns to high at the maximum count. Cascading is effected by connecting the carry and borrow outputs of a less significant counter to the Clock-Up and CLock-Down inputs, respectively, of the next most significant counter. check out : CD4029 - Binary Decade Up-Down Counter IC Pinout: Pinout Of 74HC192 IC check out : ? Binary Up/Down Counter with Clear IC - 74HC193