Title states that it works for "power cable scanning". does that mean i can use it on regular household power wires (with the circuit breaker off)?

yes, you can use it on household power wires

Can it detect correct cable without a connector on end? have bare cat 5 wires at both ends want to id which wire i have at box and wall before instal

Yes, this device can send a tone to a wire and the other part of the kit will detect it.

What batteries are required for the two components of the tester?

It use 9 V battery on each device. emitter-receiver

What is the range or how far away can the signal transmission be received?

I’ve tested a 150!run and no problem.

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Noyafa NF-810 Multifunctional Network Tester， Ethernet LAN Network Wire Tracker with Telephone Line Tester , Network line Scanning, Power Cable Scanning and POE Switch Test Functions

Product ID: 452393465

Details

Brand
NOYAFA
Colour
Black Blue
Item Weight
0.41 Kilograms
Power Source
Battery
Style
NF-810

⚡POE switch power detection

📡Multi-mode cable & line testing

🔍Precise cable scanning & wire mapping

E£ 6149

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚙️ Master your network with precision — don’t let connectivity slip away!

WIREMAP ACCURACY - Detect wire sequence faults—shorts, opens, crosses—displayed with intuitive LED indicators.
TELEPHONE LINE INSIGHT - Check polarity, line status, and detect idle, ringing, or conversation modes.
PINPOINT CABLE LOCATION - Locate RJ11/RJ15 and electronic cables instantly via sound and LED signals.
POE SWITCH COMPATIBILITY - Verify power supply on POE switches directly through RJ45 connection.
ALL IN ONE NETWORK DIAGNOSTICS - Test open, short, cross, and STP cables with ease.

The NOYAFA NF-810 is a professional-grade multifunctional network tester designed for comprehensive Ethernet LAN and telephone line diagnostics. It supports detailed cable fault detection, precise wire mapping, telephone line status checks, and POE switch power testing, all powered by a compact, battery-operated unit trusted by top network technicians.

Specifications

ASIN	B09P55SCXH
Best Sellers Rank	#70,037 in Home Improvement ( See Top 100 in Home Improvement ) #3 in Network Testers
Brand Name	NOYAFA
Colour	Black, Blue
Compatible Devices	Any device with RJ11/RJ45 cables
Customer Reviews	4.4 4.4 out of 5 stars (267)
Global Trade Identification Number	06971278907329
Included Components	PCB
Item Type Name	network cable tester
Item Weight	0.41 Kilograms
Manufacturer	NOYAFA
Measurement Type	Network and Telephone Cable Tester
Minimum Operating Voltage	60 Volts (DC)
Model Number	NF-810
Number of Items	1
Part Number	NF-810
Power Source Type	Battery Powered
Specification Met	Lan Tester with Wire Tracker, Network Signal Tester, Network cable tester, Wire Tester, Wire tracer
Style Name	NF-810
Unit Count	1 Count

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