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Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.
The Sonik HEROX Bite Alarm sets a new benchmark for what anglers can expect from an entry-to-mid-level alarm system. Traditionally, features like adjustable sensitivity, drop-back differentiation, and intelligent muting were reserved for flagship models. Sonik has disrupted that trend, packing the HEROX with a suite of professional-grade electronics housed in a sleek, compact, and—most importantly—weather-shielded chassis.
Designed for the modern carp and specialist angler, the HEROX offers eight levels of sensitivity adjustment. Whether you are fishing a wind-swept reservoir where you need to tune out wave movement, or a tiny pond where every millimetre of line movement counts, these alarms can be tailored to the second. The Intelligent Mute Mode (I.M.M) is a standout convenience, allowing you to silence the alarm while you tension your bobbins or adjust your lines, automatically re-arming itself so you never forget to turn your sound back on.
The build quality is “Sonik-tough,” featuring tall integral snag ears with rod-friendly rubber inlays to protect your blanks and keep them secure during violent takes. With a massive 150m wireless range and a dedicated Nightglow™ LED mode, the HEROX is built to perform in the dark, in the rain, and under the most demanding conditions.
| Feature | Details |
| Model | Sonik HeroX Bite Alarm (Single) |
| LEDs | Twin Hi-visibility 5mm LEDs |
| Sensitivity | 8 Adjustable Levels |
| Volume & Tone | 8 Settings (including Silent) |
| Indication | Forward and Backward Drop-back differentiation |
| Mute Mode | Intelligent Mute Mode (I.M.M) |
| Night Mode | Nightglow™ LED function |
| Power Output | 2.5mm Socket (for illuminated indicators) |
| Range | Up to 150m |
| Battery Type | 2 x AAA (not included) |
| Protection | Weather-sealed case & shielded electronics |
Pro Tip: To maximize the lifespan of your HEROX alarms, always take advantage of the AAA battery configuration. We recommend using high-quality Lithium AAA batteries. Unlike standard Alkaline batteries, Lithium versions are much less likely to leak over time and perform significantly better in sub-zero temperatures, ensuring your alarms stay active during those freezing winter sessions.
The HEROX alarm is versatile enough to handle almost any freshwater scenario:
Snag Fishing: The tall, integral snag ears ensure that even when fishing “locked up” near fallen trees or lily pads, your rod won’t be pulled off the alarm during a sideways take.
Big Pit Long-Range: With 150m of wireless range, you can trust that your HEROX receiver (sold separately) will pick up every beep even if you are at the back of a large bivvy on a noisy, windy night.
River Specialist Work: The eight sensitivity levels are perfect for river carping or barbel fishing. You can “dial down” the sensitivity to ignore the constant pull of the current or floating debris while still picking up genuine bites.
Tactical “Nightglow” Sessions: The discrete Nightglow function allows you to see exactly where your rods are positioned without needing a headtorch, helping you stay stealthy in shallow, marginal swims.
Q: Are these alarms fully waterproof?
A: Yes. The HEROX alarms feature a weather-sealed case and shielded electronics. They are designed to withstand heavy rain and damp conditions throughout the season. However, like all electronics, they should not be fully submerged.
Q: What is “Drop-back Indication”?
A: This is a premium feature where the alarm produces a different sound and LED pattern if a fish swims towards you (slackening the line) versus away from you. This is vital for knowing whether you need to strike immediately or wind in the slack.
Q: Can I use my existing illuminated bobbins with this alarm?
A: Most likely, yes. The HEROX features a standard 2.5mm power-out socket, which is the industry standard for most illuminated bobbins and swingers on the market.
Q: How does the Intelligent Mute Mode (I.M.M) work?
A: I.M.M allows you to press a button to silence the alarm for a set period while you get your rods perfectly positioned and your bobbins clipped on. This prevents the “constant beeping” that can annoy other anglers on the lake.
Q: Do I need a specific battery for these?
A: One of the best things about the HEROX range is that the alarm, the receiver, and even the bivvy light all run on standard AAA batteries. This makes it incredibly easy and affordable to carry spares in your tackle box.
Our entire team at Gerry’s are all experienced anglers and can help you choose the correct tackle for any fishing situation. Please drop us a message or give us a call if you need any help.
You can return unused standard items within 30 days for exchange or refund.
We check our prices weekly to ensure we can combine our fabulous service with the best prices. If you find an item cheaper and in stock somewhere else, drop us a a message in the chat box and we can see what we can do.
This item is available for next day delivery. You can pick this in the checkout.
We offer free post to any mainland UK address with a basket of more than £80. We also send all over the world and the best way to find out how much postage you will pay is in our checkout. Add the items to your basket and then add your address. Our checkout will automatically calculate your total.
We have come from a tiny fishing store and grown into one of the biggest fishing tackle retailers in the UK winning countless awards over the years. We are still a family business offer fabulous service online and in-store.
Spread the cost of larger orders over 6 or 12 month 0% APR. We also offer longer terms with APR charges via V12 finance. Available in the checkout.
You can make your next purchase a little easier on the wallet by splitting the total into 3 payments by using Klarna payments in the checkout.




Penn Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
Wader Waist Guide
Small (28″-30″)
Medium (30″-33″)
Large (34″-37″)
XLarge (37″-39″)
XXLarge (39″-42″)
3XLarge (42″-45″)
Kinetic/Westin Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Grundens Chest Size Guide
Small (36″-37″)
Medium (38″-40″)
Large (42″-44″)
XLarge (46″-48″)
XXLarge (50″-52″)
3XLarge (54″-56″)
Vass Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trakker Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Korda Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Guy Cotten Chest Size Guide
Small (86 – 94cm)
Medium (94 – 102cm)
Large (102 – 110cm)
XLarge (110 – 124cm)
XXLarge (124 – 134cm)
3XLarge (134 – 154cm)
Fox Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Nash Chest Size Guide
Small (36″-38″)
Medium (39″-41″)
Large (42″-44″)
XLarge (45″-47″)
XXLarge (48″-50″)
3XLarge (51″-54″)
4XLarge (55″-60″)
Aqua Chest Size Guide
Small (38-40″)
Medium (41-43″)
Large (44-46″)
Xlarge (47-49″)
XXLarge (50-52″)
XXXLarge (53-55″)
Guru Chest Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Preston Chest Innovations Size Guide
Small (36″-38″)
Medium (38″-41″)
Large (42″-44″)
XLarge (45″-46″)
XXLarge (47″-48″)
3XLarge (49″-51″)
Trouser Waist Guide (Inches)
Small – 28″ – 32″
Medium 32″ – 34″
Large – 34″ – 36″
X-Large 36″ – 38″
XX-Large – 38″ – 42″
XXX-Large 42″ – 46″
XXXX-Large 46″ – 52″