AJAX 42838.37.BL3 Radio Signal Range Extender, Black AJAX 42838.37.BL3 Radio Signal Range Extender, Black AJAX 42838.37.BL3 Radio Signal Range Extender, Black AJAX 42838.37.BL3 Radio Signal Range Extender, Black
AJAX 42838.37.BL3 Radio Signal Range Extender, Black
AJAX 42838.37.BL3 Radio Signal Range Extender, Black
AJAX 42838.37.BL3 Radio Signal Range Extender, Black
AJAX 42838.37.BL3 Radio Signal Range Extender, Black

AJAX 42838.37.BL3 Radio Signal Range Extender, Black

$171.99
Brand: AJAXReviews
Available to order. Usually ships in 1–3 business days.
  • Free US shipping on orders over $200. Add $28.01 more to qualify.
  • 30-day returns counted from delivery. Return policy
  • Manufacturer's warranty from AJAX. Warranty
  • Need a quote? Add it to your cart and download a PDF quote, or ask for volume pricing.
D Questions about this product? Daniel and the team reply fast, usually within minutes. Chat with us now or email us.
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Product Overview


ReX is a range extender of communication signals that expands the radio communication range of Ajax devices fitted with a hub up to 2-fold. Developed only for indoor use. It has a built-in tamper resistance and is equipped with a battery that provides up to 35 hours of operation without external power.

Feature:

  • Frequency hopping against jamming
  • Up to 35 hours on the back-up battery incase of external power loss
  • Fast connection with security system via QR code
  • Tampering alarm for lid protection
  • Over-the-air updates
  • Remote control and setup via an Ajax apps
General Information
Name: AJAX 42838.37.BL3 Radio Signal Range Extender, Black, AJAX SYSTEMS CH, AJAX
Category: AJAX, Intrusion, Alarm Control Panels & Keypads, Control Panel Repeaters
UPC Code: 850042389201
Country of Origin: Ukraine. Country of origin is subject to change.

Shipping

Free US shipping on orders over $200. Orders under $200 ship at the rate shown at checkout. Oversized items ship by freight; we confirm the quote with you first.

Shipping policy

Returns

Return within 30 days of delivery. Opened items may carry an open-box fee of up to 30%, set by our QA team on inspection. Return shipping is paid by the customer.

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Damaged or wrong item?

Tell us within 3 days of delivery with photos and we'll make it right, with no fee.

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AJAX warranty

This product is covered by the manufacturer's warranty. We help you with the claim from start to finish.

Warranty details

Support from real people

Setup questions, compatibility, firmware: chat with a specialist or email info@silarius.com, Monday to Friday, 8am to 4pm ET.

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Business accounts

Approved businesses can pay on Net 30 / PO terms after their second completed order.

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Frequently Asked Questions

What is the AJAX 42838.37.BL3 Radio Signal Range Extender, Black?+
Available at Silarius — your trusted source for professional security, audio, and technology solutions.
Is it covered by a warranty?+
Yes — Silarius provides manufacturer-backed warranty support. Contact us at silarius.com.
How do I get technical support?+
Contact our team at silarius.com/contact for pre-sale and post-sale support.
Can I order in bulk?+
Yes — Silarius offers volume pricing for integrators, resellers, and commercial buyers.
What is the shipping time?+
In-stock items ship within 1–2 business days.

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