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Electromechanical

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PBS-LED-200WH 12V 16mm with White LED Ring Waterproof Latching Pushbutton Switch
US$6.35
These illuminated waterproof chrome-plated metal pushbuttons give a professional appearance to any project. These are latching pushbuttons. When you press it the 'normally-open' contact shorts to the common contact and the ‘normally closed’ contact button opens. The switches will stay in this position until the button is push again. Waterproofing is provided with a rubber O-ring. On the front of the button is a flat metal actuator, surrounded by a plastic LED ring. On the back there are 3 contacts for the switch; C (common), NO (normally open) and NC (normally closed) and 2 contacts for the LED ring (+ and -). Connect 12VDC to the LED ring to have it light up nicely, there's a built in resistor!
Delivery within 2-3 weeks
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WIFI-ESP8266-R ESP8266 WIFI Microcontroller with 120VAC 12A Relay Module
US$11.19
If you need a microcontroller that can handle the automation of your electric devices wirelessly, look no further. This breakout board includes an ESP8266 with built-in WIFI along with a relay module that is capable of supplying 12A at 125VAC. Simply, you can send commands via WIFI from your phone or computer to control the included relay, in addition to receiving data from sensors that are connected to the ESP8266.
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FRL263A012/04CS Relay ½HP 4PDT 12VAC 3A Solder Lugs
US$10.99
Features: Rugged construction for high reliability. See-through dust cover. Available socket R95-110 sold separately for FRL263A012/04CS.
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SEC-90 Embedded Normally-Closed Magnetic Switch for Access Control
US$2.23

Recessed magnetic door switches are made with the same magnetic reed switches used for surface-mount alarm contacts. Instead of a rectangular housing, recessed alarm contacts have a cylindrical case. This makes them easy to install, just by drilling a hole of the proper diameter. The magnets are also designed with the same type of cylindrical housing.

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MOT-PCA9685-A I2C PCA9685 16-Channel PWM / 12 – bit Servo Driver
US$12.53
This module allows users to connect to Raspberry pi or Arduino to control multiple motors using i2c protocol. You can also drive LEDs with the module and supply external voltage and current. You can drive up to 16 PWM outputs using four wires from your microcontroller. You can buy a bunch and have up to 6 address to select resulting in 62 modules with a total of 992 outputs.
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KN-MF-A03 Control and Instrument Knob
US$2.72
This knob has an excellent industrial look and feel with a chrome finish on top of a black plastic body knob with positive finger grips. A white line position indicator makes it visually easy to see its position on the 0-100 scale plate that is included. Has a solid set screw attachment for standard potentiometer shafts.
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TUBE-S-6 One Meter 6x9mm Flexible Food Grade Silicone Hose
US$5.49
This translucent silicone tubing can be used for pumping liquids and chemicals. It can be used with the MOT-RS-360A peristaltic pump.
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SERVO-DISC 25 Teeth Metal Servo Disc for MG995 MG996 Servos
US$1.58
This product is a metal servo attachment that allows you to mount larger flat attachments to your MG995/MG996 servos. It has four 3mm holes that allow the disc to be fastened securely against the attachment. M3 screws are included for easy installation.
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MOT-ACT100 12VDC 100mm Stroke 500N 20MM/s Aluminum Shaft Linear Actuator
US$64.95
This device is a heavy duty actuator that is capable of extending/retracting its arm with high amount of torque. It is powered via a large and powerful 12 VDC geared motor that allows for its arm to move back and forth. It can be used to open doors, windows, lift objects etc. Note: This actuator has a safety feature that prevents the arm from moving any further when reaching maximum or minimum length to prevent damaging the gears. Inverting the polarity allows you to change directions.
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MOT-ACT500 12VDC 500mm Stroke 900N 12 mm/s Aluminum Shaft Linear Actuator
US$113.70
This device is a heavy duty actuator that is capable of extending/retracting its arm with high amount of torque. It is powered via a large and powerful 12 VDC geared motor that allows for its arm to move back and forth. It can be used to open doors, windows, lift objects etc. Note: This actuator has a safety feature that prevents the arm from moving any further when reaching maximum or minimum length to prevent damaging the gears. Inverting the polarity allows you to change directions.
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MOT-ACT300 12VDC 300mm Stroke 900N 12 mm/s Aluminum Shaft Linear Actuator
US$89.98
This device is a heavy duty actuator that is capable of extending/retracting its arm with high amount of torque. It is powered via a large and powerful 12 VDC geared motor that allows for its arm to move back and forth. It can be used to open doors, windows, lift objects etc. Note: This actuator has a safety feature that prevents the arm from moving any further when reaching maximum or minimum length to prevent damaging the gears. Inverting the polarity allows you to change directions.
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MOT-SM-V Nema 17 Stepper Motor Sound Damper for 3D Printers and CNC Machines
US$3.39
This damper reduces the noise and vibration coming from you stepper motor. It is compatible with most 3D printers and small CNC machines that use Nema 17 Stepper motors.
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367-ADA Tactile Button switch (6mm) x 20 pack
US$3.85
The pins are normally open (disconnected) and when the button is pressed they are momentarily closed. They come in a pack of 20, they're pretty handy so you'll want to keep them around.
Delivery within 2-3 weeks
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3105-ADA Mini Illuminated Momentary Pushbutton - Blue Power Symbol
US$3.00
This Mini Illuminated Momentary Power Button is an adorable breadboard-friendly tactile switch that has a built-in LED. It provides a simple way to add a tactile switch and a colorful universal power symbol to your project.  The tact switch is about the same size as 6mm tactile switches and can snap into a breadboard. There are an additional two pins that connect to the anode and cathode of a small LED that shines through the top. Note that this is a momentary button, not a on-off switch! Also, the LED is not connected to the switch in any way, and does not include a resistor. You'll need to add your own ~1K resistor and control the LED with a microcontroller pin or whatever you like.
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3104-ADA Mini Illuminated Momentary Pushbutton - Red Power Symbol
US$3.00
This Mini Illuminated Momentary Power Button it an adorable breadboard-friendly tactile switch that has a built-in LED. It provides a simple way to add a tactile switch and a colorful universal power symbol to your project.  The tact switch is about the same size as 6mm tactile switches and can snap into a breadboard. There are an additional two pins that connect to the anode and cathode of a small LED that shines through the top. Note that this is a momentary button, not a on-off switch! Also, the LED is not connected to the switch in any way, and does not include a resistor. You'll need to add your own ~1K resistor and control the LED with a microcontroller pin or whatever you like.
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