Description
Reviews
| Brand | - |
| Category | Stationery, Educational Electronics & Office Supplies / Manuals & Guides |
| Origin | - |
| Brand | Keyence |
| Model Number | FS-V31P |
| Included Component | Fiber Optic FU-77V |
| Condition | Refurbished / Repaired |
| Documentation | User Manual Included |
| Sensor Type | Digital Fiber Amplifier |
| Power Supply | 12-24 VDC |
| Output Configuration | NPN/PNP Selectable |
| Response Time | 50 microseconds |
| Warranty Status | 90-Day Seller Warranty |
Anonymous
Mar 29, 2026
Rating: 5/5
Excellent sensitivity and response
Installed this on a high-speed sorting machine. The response time is incredibly fast, and the digital display makes setting thresholds very intuitive. The fact that it comes with the fiber optic cable saved us an extra order.
Anonymous
Mar 25, 2026
Rating: 5/5
Reliable and cost-effective
I was hesitant about buying a repaired electronic component, but Keyence units are built like tanks. This one has been running 24/7 for three weeks without a single glitch. The manual was clear and helpful for setup.
Anonymous
Mar 25, 2026
Rating: 5/5
Perfect replacement for our production line
We needed a quick replacement for a failed unit on our packaging line. This refurbished FS-V31P arrived quickly and worked flawlessly out of the box. The included FU-77V fiber was exactly what we needed. Great value compared to buying brand new.
Anonymous
Mar 07, 2026
Rating: 4/5
Good condition, minor cosmetic wear
The amplifier functions perfectly and calibration was easy using the included manual. There are some very slight scuffs on the casing, which is expected for a repaired item, but it doesn't affect performance at all. Would buy again.
Anonymous
Mar 07, 2026
Rating: 4/5
Works great, packaging could be better
The unit itself is fantastic and performs just like a new one. My only complaint is that the packaging was a bit loose, though fortunately nothing was damaged during shipping. The price point makes it a no-brainer for spare parts.
Anonymous
Mar 02, 2026
Rating: 5/5
Saved us from downtime
Our original amplifier died unexpectedly, and this was the only option available for immediate shipment. It arrived in two days, installed easily, and got our line running again. Very satisfied with the quality of the repair.
Q: What is the exact warranty period for this repaired item?
A: This refurbished unit comes with a 90-day warranty covering functional defects. It does not cover physical damage caused by improper installation.
Q: Does this unit come with the mounting bracket?
A: Yes, the standard DIN rail mounting bracket is included with the amplifier unit.
Q: Is the manual in English or Japanese?
A: The included manual is the English version. A digital PDF copy can also be downloaded from the Keyence website if needed.
Q: Can this amplifier work with fiber optics from other brands?
A: While it is optimized for Keyence fibers like the included FU-77V, it may work with third-party fibers that match the specific physical dimensions and light transmission properties, though performance is not guaranteed.
Q: Has the firmware been updated to the latest version?
A: The unit has been tested to ensure it meets original factory specifications. Specific firmware versions vary by batch, but all units are verified to be fully compatible with current industrial standards.
Minimalist Japanese Style Kitchen Sponge Brush Dish Soap Drain Rack Air-Dry Cloth Rack Sink Organizer Box
$21.00
PVC Cable Cover and Rubber Wire Duct, Speed Bump Style Wire Protector for Indoor Electrical Cables and Water Pipes
$9.10
Spiegel BGF-161 Portable Tire Stone Removal Hook - Multi-function Tool for Cleaning Car Tire Treads
$7.84
7A Natural Amethyst Purple Rabbit Hair Loose Beads for Women's DIY Bracelets and Snowflake Necklaces
$3.83
DIY Handmade Soap Silicone Mold, Essential Oil Soap, Creative Gift Soap Base and Aromatherapy Materials, Love Forever Design
$12.90
Flameless Aromatherapy Diffuser with Essential Oils, Dried Flowers, and Preserved Flower Decor
$13.60
DOUBLECOIN 7.00R16LT-14 (RSS2) All-Steel Radial Truck Tire - Economical and Wear-Resistant
$1,375.00
Tactical Laser Flashlight, Super Bright Rechargeable Mini Portable Light for Outdoor Long-Range Use, Home Multi-Function Zoom
$339.22
![MOOCAT [Polaroid Style] Hand-drawn Blank Irregular Wood Pulp Fine-grain Paper for Cyanotype, Street Vending, and Art Projects](https://www.gosteppe.com/cache/small/product/270441/legacy-main-3390792413846e9dfc410750.webp)
MOOCAT [Polaroid Style] Hand-drawn Blank Irregular Wood Pulp Fine-grain Paper for Cyanotype, Street Vending, and Art Projects
$11.90
New Pearl Mini Watercolor Solid Set – Portable Travel Sketchbook & Palette Kit for Students, 12 Colors with Magnetic Transparent Case
$5.78
Natural Cream-Body Green Rutilated Quartz Loose Beads - DIY Handmade Beading Accessories including Spacer Beads and Multi-Gem Bracelet Components
$5.25
Fresh Milk Beverage Production Equipment – Small Pasteurization Tank & Fermented Liquid Yogurt Tank
$6,580.00
Mold Mirror Polishing Cloth - Removes Material Marks, Available in Red, Yellow, White; Self-Adhesive Velvet for High-Gloss Mirror Finishing
$21.60
High Borosilicate Glass Cup, DIY Scented Candle Transparent Round Cup, Soy Wax Jelly Cup, Wax Molding Empty Container
$2.38
Natural Aquamarine Black Flash Loose Beads for DIY Handmade Jewelry, Stringing Beads, and Round Beads
$0.88
Touchmark Watercolor Sketchbook for Acrylic Markers and Colored Pencils, Mini Portable Pocket Painting Book for Children and Outdoor Sketching
$6.74
Kunzite Loose Beads Donghai Crystal Agate Chalcedony Jade Gemstone Bracelet Pendant Single Bead Cat's Eye Accessories
$6.72
FAW J6P Wiper Arm Assembly for JH6/J6M/J6L, Large and Small J6 Trucks and Tractors
$11.00
Universal Front Mount Hook for E-Bikes and Motorcycles, No-Drill Helmet and Delivery Bag Hanger
$5.98
Huapu Haiyu Haixun Haishang Haiyue Haifeng 1.3L 1.XL 1.8L Clutch 5 Three-Piece Assembly
$436.00
Portable Oxygen Concentrator with Replaceable Batteries - Complete Set Including 4-Core, 8-Core, and 12-Core Batteries with Charging Base
$400.00
Custom 90° Right-Angle Hook Tool for Pulsator Washing Machine Base Removal
$2.36
MOMA Small Ma 4K Wireless Video Transmission System with HDMI and SDI for Filming and Live Streaming
$1,999.00
Youzhao Pai Creative Retro 3D Embossed House Number Plate – Custom Door Signs for Villas, Commercial Spaces, and Homes
$200.00
Tianzheng DZ15LE-100/3N901T 100A Transparent Leakage Circuit Breaker, Molded Case Circuit Breaker 3901T 63A
$278.00
![[Daimai Holds Micro-Needle Hair Transplant Patent] Little Red Cap Hydro Glow | Scalp Hydration and Repair](https://www.gosteppe.com/cache/small/product/270424/legacy-main-ecbdc6ee4688639f4a8ef150.webp)
[Daimai Holds Micro-Needle Hair Transplant Patent] Little Red Cap Hydro Glow | Scalp Hydration and Repair
$880.00
Pelican Rolling Case pelican1560 - Waterproof Shockproof Safety Case for Photography Equipment and Instruments
$1,550.00
Disipulai Hot Air Circulation Vertical Food Warmer Display Cabinet - Adjustable Temperature Countertop Cooked Food Warming Equipment
$2,023.00
Complete Pasteurization Production Line for Pomegranate, Grape, Orange, Apple Juice, and Mare's Milk
$6,048.00
Portable Tire Stone Removal Tool - Essential Handheld Hook for Car Owners
$13.73
![[Customizable] Blank DIY Bookmarks - Thickened Hard Cardstock in Multiple Sizes with Tassels for Kindergarten and Elementary Art, Calligraphy, and Reading Gifts](https://www.gosteppe.com/cache/medium/product/386159/legacy-main-05a2e5e73e5ac60017fbef5e.webp)
