Micro Servo


The HS-81 micro servo is used to move the camera mount platform on all versions of OpenROV. It features a 3-pole ferrite motor and nylon gears. It's compact, lightweight, and low-cost.


  • Speed: .11 sec @ 60 deg. @ 4.8V
  • Torque: 2.6 kg/cm @ 4.8V
  • Size: 29.72mm x 11.94mm x 29.46mm
  • Weight: 16.44g


Once an order is placed on our webstore, it will ship within 1-3 business days. 

Taxes: For international orders, please note that it is the responsibility of the customer to cover any import any duties and taxes. You can use this third party online duty calculator to determine what the cost of this fee will be prior to ordering. The harmonization code we apply to commercial invoices is as follows:

ROV's, parts and accessories: 9503000000

Batteries: 8507600000

Apparel (Shirts and Hats): 6109100004

Once an order has been shipped, please allow up to: 

1 Week for Domestic (US) orders to arrive. 

2 Weeks for International orders to arrive. Please note that every countries' customs offices process orders at a different pace. 

Once your shipping label has been printed in our warehouse, you will then receive an automatic email containing a tracking number, and an invoice that you can use for accounting purposes. For international orders a commercial invoice is affixed either physically, or electronically to the package for the customs agents to access.