401-943-1164 / US & Canada Toll Free: 877-943-1164

Model 316, Catalog #309025 - 316 Sure-Guard Surge Suppressor

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Catalog No: 309025
Model No: Sure-Guard 316
Pins Protected:1 thru 14, 16, 20


Shipping Terms

Shipments are made via UPS Ground, unless otherwise specified. Freight charges are prepaid and added to your invoice. We can estimate the freight costs for you.

We can ship freight collect on your account, just provide your UPS Account Number.

We can also ship via the carrier of your choice. Provide the details and your account number.

Products shall be shipped F.O.B. Electro Standards' facility. Title to and risk of loss or damage to the products shall pass to you upon Electro Standards delivery of the products to a carrier for shipment. Title to software will remain with the applicable licensor. Electro Standards' prices do not include shipping and handling charges. Electro Standards reserves the right to use its own discretion in the manner and routing of shipments. Electro Standards shall be permitted to deliver products in separate lots.

Shipping Return Policy

  • To return an item, contact Electro Standards at 401-943-1164 to obtain a Return Material Authorization (RMA) number. RMA numbers are valid for 30 days after the date of the shipment and cannot be extended or re-issued. We are unable to accept returns without an RMA number.
  • All returns except those of defective product are subject to a 15% restocking fee, and additional charges for handling or freight are refunded only in cases of defective products.
  • Return freight must be shipped prepaid. We recommend that you insure the package as you are responsible for risk of loss on all returned packages. We recommend that all cartons are properly packed as Electro Standards is not responsible for product damaged en route. We do not issue call tags for product returns.
  • Returned product must be clean, undamaged, and complete with all manuals, accessories, documents and packaging. The items must be in a resalable condition.
  • The product must have with it a copy of the original invoice or packing slip and the appropriate RMA paperwork.
  • If your item is not working properly, please contact Electro Standards at 401-943-1164 for help in trouble-shooting your application.
  • If the product is defective, Electro Standards will repair or replace that item (at our discretion) upon receipt and evaluation of the original product.
  • Electro Standards reserves the right to authorize product returns after 30 days from the invoice date in some cases. If the product is accepted after 30 days, credit will be issued toward future pruchases only and some additional restocking charges may be applied.
  • All credits from RMAs must be used within one calendar year of issue.

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Model 316, Cat. No. 309025, PC/Parallel 
Sure-Guard Surge Suppressor

Model 316 protects your computer's data interface from destructive transient voltages caused by lightning, brownouts and rolling brownouts!

Sure-Guard Model 316 Surge Suppressors are designed to limit transient voltages that damage hardware and disrupt data transmission between computers at the DB-25 PC/Parallel printer interface.

Data Communications line protection can no longer be overlooked. Its role in a well-managed effective system is essential to the overall welfare of the data-processing environment. The cost of protection from lightning, industrial disturbances, motor switching, and magnetic/electrostatic induction from power lines is surprisingly inexpensive and maintenance free.

System reliability depends upon a well-protected electrical environment. UPS and power line surge suppressors do not provide complete protection for data lines. Add Sure-Guard Surge Protectors to protect your data lines.


  • Protects all 16 data, handshake control, and ground signals (pins 1 thru 14, 16 and 20)
  • Protects parallel printer interface against power or switching surges.
  • Clamps damaging voltages to safe limits.
  • Shunts current surges to ground shield.
  • Attaches easily to common port or peripheral sharing switch.
  • Attaches easily to PC/Parallel Port.

For other Sure Guard Surge Suppressors, see Sure-Guard Surge Suppressor Model 308 
(Cat. No.309020) and Sure-Guard Surge Suppressor Model 303 (Cat No 309010) under Related Products tab.

*Prices online are subject to change and verification.
All ESL products are availabe for export.


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