Best in 7 days
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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
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Description
LDTR - WG0004 NE555 Pulse Frequency Duty Cycle Adjustable Module Square Wave Signal Generator1. Used as a square wave signal generator, which produces square wave signals for experimental development. 2. Used to generate square wave signals that can drive the stepper motor . 3. The adjustable pulse is generated for use of MCU. 4. Generate adjustable pulses to control the related circuits. 5. NOTE : When using a jumper cap to change the frequency, please cut off the power first, wait for the jump cap and then reconnect. Specification: General
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- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.3 ★★★★★
Based on 1921 reviews
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Product Reviews
★★★★★ 3
Could be better
A lense came with a HUGE scratch, the glasses are completely lopsided. Any way I can fix this ?
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Reviewed in the United States on June 6, 2025
★★★★★ 5
Excelente compra
Me encantó, amo mis lentes
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Reviewed in the United States on March 17, 2026
★★★★★ 5
Lentes
Producto está en perfecto estado era lo que quería la relación precio calidad está bien las fotos que se muestran son 100% real a como luce el producto
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Reviewed in the United States on September 29, 2025
★★★★★ 5
Buy
Great glasses so pretty
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Reviewed in the United States on May 28, 2025
★★★★★ 5
Very stylish
Beautiful glasses
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Reviewed in the United States on March 28, 2026
