Jwthee Frequency Counter Handheld Tester 250-450MHz Remote Key

Description

Product Overview

The Jwthee Frequency Counter is a compact handheld device designed to measure and display radio frequencies used by common remote key systems. Supporting a wide band from 250 MHz to 450 MHz, it covers popular frequencies such as 315 MHz and 433 MHz used in garage doors, electric locks and access control panels. The unit measures 3.94 × 2.36 × 1.18 inches and weighs only 2.57 oz, making it easy to carry in a pocket or tool belt. A clear LCD shows the exact frequency when a remote is placed within a 10‑inch testing area, and the built‑in error margin of ±1‑2 MHz meets basic pairing requirements. Manufactured by Jwthee, the device is built for durability in low‑temperature or vibrating industrial settings.

Usage

Technicians and installers use this tester to verify that a remote key is transmitting within the expected frequency range before pairing it with a door controller or lock. It is ideal for field work in residential garage installations, commercial access control upgrades, and maintenance of automatic door anti‑theft alarm systems. Simply hold the tester, place the remote within the detection zone, press the button on the remote and read the frequency instantly. The device works equally well in workshops, on‑site construction zones, or in a service van.

Why Choose Us

Jwthee combines precise engineering with a rugged handheld form factor, delivering a tool that professionals trust for daily use. The frequency meter is calibrated to maintain stability even in harsh environments, and the LCD remains legible under bright sunlight. Our quality assurance process includes temperature cycling and vibration testing, ensuring the unit performs reliably from -20 °C to 60 °C. Backed by a responsive support team, customers receive prompt assistance and a one‑year warranty covering manufacturing defects.

Key Features

• Wide 250‑450 MHz coverage captures all common remote key frequencies for easy verification.
• Palm‑sized, lightweight design lets you carry the tester wherever the job takes you.
• Direct frequency display eliminates guesswork and speeds up installation time.
• ±1‑2 MHz error tolerance provides reliable pairing results for most applications.
• Dedicated customer support and one‑year warranty ensure peace of mind after purchase.

FAQ

What frequency range does the tester cover?

The device measures frequencies from 250 MHz to 450 MHz, which includes the most widely used remote key bands such as 315 MHz and 433 MHz.

How close must the remote be to the tester?

Place the remote within approximately 10 inches of the tester’s antenna and press the remote button; the frequency will appear on the LCD instantly.

Is the tester suitable for outdoor use?

Yes, the rugged housing and temperature‑rated components allow reliable operation in outdoor environments, from cold winter mornings to hot summer afternoons.

Can the meter be used for other RF devices?

While optimized for remote key signals, the meter can also detect other low‑power RF transmitters that fall within the 250‑450 MHz range.

What warranty does Jwthee provide?

All units come with a one‑year limited warranty covering manufacturing defects, and our support team is available to help with any technical questions.