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Table of Contents
- 1 Orbit 57900 12-Station Outdoor Swing Panel Sprinkler System Timer
- 2 TOPENS TRF3 Safety Reflection Photocell Retro-Reflective Photoelectric Beam Sensor for Automatic Swing Sliding Gate Openers Garage Door Openers Access Control Security Alarm Systems Outdoor Use
- 3 TOPENS ERM12 Universal External Receiver with 2 Remote Control Transmitters for Automatic Swing Sliding Gate Opener Garage Door Opener, Remote Operator Accessory for Outdoor Use
- 4 2Pack L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper Compatible with Ar-duino Electric Projects, Smart Car Robot
- 5 Electronic Parts 10A~100A Cover Solid State Relay DA DD Single Phase DC Control AC 220V Relay to 3-32VDC SSR-10DA 25DA 40DA (Color : Da, Size : 60)
- 6 Electronic Parts Truck Automotive DC 12V 40A 40 AMP SPDT Relay Relays 5 Pin 5P
- 7 Boolean Algebra and Its Applications (Dover Books on Computer Science)
Orbit 57900 12-Station Outdoor Swing Panel Sprinkler System Timer
- For controlling 24 VAC sprinkler and drip systems with up to 12 zones/stations; engineered for indoor or outdoor locations with exposure to weather
- Locking cabinet with two keys and swing panel display for easy access; capable of powering a pump start relay and one valve solenoid at the same time
- A, B and C program slots allow you to set up to three unique watering schedules; each program has up to four different start times for cycle and soak windows
- Manual mode allows you to run one zone, multiple zones, or all zones; rain delay feature allows you to skip watering of zones during rain or freeze
- Compatible with 24 VAC valves from Orbit, Hydro-Rain, and other major brands
TOPENS TRF3 Safety Reflection Photocell Retro-Reflective Photoelectric Beam Sensor for Automatic Swing Sliding Gate Openers Garage Door Openers Access Control Security Alarm Systems Outdoor Use
- RELIABLE REVERSING SENSOR - TOPENS TRF3 Reflection Photocell Sensor is an outdoor photoelectric sensor with rapid response. It creates a safety barrier that detects any movement in its path. Once triggered, it perfectly makes the gate stop or reverse automatically in case of obstruction. It is strongly recommended to use the TRF3 reflective sensor with automatic gate opener system to ensure multiple protection & security.
- WIDE COMPATIBILITY - Works with all the TOPENS gate openers, and compatible with most third party swing / sliding gate opener or garage door opener whose control board accepts “Normal Open or Normal Close Dry Contact” signal. It can be powered by the control board of the gate opener or by the external 12-30VDC or 10-25VAC power source. This safety beam sensor is commonly used for the household, courtyard, farm, ranch, warehouse and other commercial / industrial sites.
- EASY DIY INSTALLTION - Simple wire connection makes the installation labor-saving. Just connect the retro-reflective photocell to the gate opener system. It is suggested to mount the photocell at least 8” (20cm) above the ground. Power on to determine the reflector position. Ensure that there is no obstruction between the photocell and the reflector during alignment. Fix the reflector position when the photocell status LED is green.
- CLEVER DESIGN - The waterproof cover offers stable protection in bad weather conditions. The photocell beam sensor is completely free to maintain for outdoor use. Made of high-quality UV-resistant and flame-retardant material, the durable housing promises a long-lasting performance.
- OUTSTANDING CUSTOMER SUPPORT - All the TOPENS products come with a 12-month warranty against defects, a 30-day worry-free exchange & return and lifetime tech support. Visit TOPENS official website for the user manual, installation video, and personalized service. TOPENS is ready to offer professional solutions for any questions or assistance. Enjoy an easier and smarter life by ordering TOPENS products.
TOPENS ERM12 Universal External Receiver with 2 Remote Control Transmitters for Automatic Swing Sliding Gate Opener Garage Door Opener, Remote Operator Accessory for Outdoor Use
- SAFE CONNECTIVITY - TOPENS ERM12 External Receiver perfectly receives signals from TOPENS wireless access devices, such as remote control and keypad. It transmits signals to the gate opener, triggering the gate to open or close. With advanced TOPENS code technology, ERM12 establishes a reliable and secure link between the gate opener and remote control devices. In addition, the external receiver can be used to extend the operating range of TOPENS wireless control accessories.
- PAIR UP TO 250 REMOTES - Simple wire connection makes installation labor-saving. Just connect the ERM12 to the gate opener system. Program the M12 Remote Control (incl.) with ERM12 universal receiver, and then the M12 remote will perfectly makes the gate operate between open-stop-close-stop-open. All TOPENS swing and sliding gate openers can be operated by the M12 remote. ERM12 rolling code external receiver can be programmed with up to 250 pcs TOPENS M12 remote control transmitters.
- WIDE COMPATIBILITY - Works with all TOPENS gate openers, and is compatible with most third party gate opener or garage door opener whose control board accepts the "Normal Open Dry Contact" signal for the push button. It can be powered by the control board of the gate opener or by the external 9-24VDC power source. Kindly note that ERM12 receiver ONLY works with TOPENS wireless remote control accessories.
- CLEVER DESIGN - The external receiver is suitable for household, courtyard, farm, ranch, warehouse and other commercial / industrial sites. Weather resistant for all seasons of the year. Made of high-quality UV-resistant, flame-retardant and durable materials, the waterproof receiver works in bad weather conditions. Please note that the ERM12 external receiver works with the gate / garage door openers only, and does not support other door access control systems.
- OUTSTANDING CUSTOMER SUPPORT - All the TOPENS products come with a 12-month warranty against defects, a 30-day worry-free exchange & return and lifetime tech support. Visit TOPENS store for the user manual, installation video, and personalized service. TOPENS is ready to offer professional solutions for any questions or assistance. Enjoy an easier and smarter life by ordering TOPENS products.
2Pack L298N Motor Drive Controller Board Module Dual H Bridge DC Stepper Compatible with Ar-duino Electric Projects, Smart Car Robot
- Dual-channel H-bridge driver working mode creates higher working efficiency,L298N as main chip, Can drive one 2-phase stepper motor, one 4-phase stepper motor or two DC motors.
- To avoid damage the voltage stabilizing chip, please use an external 5V logic supply when using more than 12V driving voltage.
- Use large-capacity filter capacitors and diode with freewheeling protection function, increasing reliability.
- High working power to 46v,large current can reach 3A MAX and continue current is 2A, power to 25w.
- Large capacity filter capacitance,afterflow protection diode, more stable and reliable.
$64.62
Buy on AmazonBoolean Algebra and Its Applications (Dover Books on Computer Science)
- Whitesitt, J. Eldon (Author)
- English (Publication Language)
- 192 Pages - 03/18/2010 (Publication Date) - Dover Publications (Publisher)
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Last update 2021-09-03. Price and product availability may change.