What size is the servo horn/arm?

There are three arms provided with each servo. Two double arms approx 1 1/4" overall length (one has 2 additional small arms as per the picture) and one single arm approx 3/4" overall length

Will these handle signals between 800 and 2200 microseconds? When I use a test box they get very jittery above 2000 microseconds.

Dear, thank you for your question. The jitter is caused by the unstable analog signal power supply. It is recommended to use 600-2400 pulse width. I hope it can help you

There are three wire leads on the servo. Assuming the black wire is the ground which is the power lead, red or orange?

Red is power, yellow is the PWM.

Will these connectors fit a Spektrum SR515 receiver

These servos have a standard 3 pin connector without a tab that fit Futaba, JR, and Hitec receivers. If you receiver has standard 3 pin connections they should work.

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Sg90 9g Micro Servo Motor for Arduino RC Car Robot Boat Plane 5Pcs | Mini, Small, 9 Gram, Metal Gear, Digital, 180 Degree, Steering Servos for Rc Airplane Helicopter Robotic Arm Diy

Product ID: 123819006

Details

Brand
Miuzei
Manufacturer
Miuzei
Material
Metal
Model Name
sg90 9g servo
Number of Items
5

🔄180° precise digital rotation

⏱️0.08 sec/60° high-speed response

⚙️9g ultra-lightweight metal gear

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Description

⚡ Power your projects with precision and speed — don’t get left behind!

ROBUST METAL GEARS - Durable metal gear construction ensures long-lasting performance under demanding conditions.
FEATHERLIGHT PRECISION - At just 9 grams, this micro servo delivers powerful torque without weighing down your project.
SEAMLESS COMPATIBILITY - Plug-and-play with Arduino, Raspberry Pi, JR, and Futaba interfaces for endless DIY innovation.
LIGHTNING FAST RESPONSE - Achieve near-instant 0.08-second rotation for ultra-smooth, real-time control.
VERSATILE 180 ROTATION - Wide-angle steering perfect for RC cars, drones, robotic arms, and more—engineer your next breakthrough.

The Miuzei SG90 9g Micro Servo Motor is a compact, lightweight digital servo featuring durable metal gears, a rapid 0.08-second per 60° rotation speed, and a 180° operating angle. Compatible with popular DIY platforms like Arduino and Raspberry Pi, it’s ideal for RC vehicles, drones, robotic arms, and other precision control applications.

Specifications

ASIN	B07NSVKZP7
Best Sellers Rank	#19,405 in Toys & Games ( See Top 100 in Toys & Games ) #7 in RC Servos
Brand Name	Miuzei
Customer Reviews	4.6 4.6 out of 5 stars (1,119)
Included Components	sg90 servo motor
Manufacturer	Miuzei
Material Type	Metal
Model	sg90 servo
Model Name	sg90 9g servo
Number of Items	5
Part Number	sg90
UPC	657390343417

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€ 29.07

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In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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