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Alarms · Standalone bite alarms · Our take
Nash Siren S5
Nash Siren S5
A tiny standalone alarm with plenty of volume, sensitive indication and a few handy Nash touches. Just don’t expect a receiver or Night Glo compatibility.
- Compact standalone bite alarm with super-sensitive bite indication.
- High-output volume, run LED and latching LED.
- Powered by one CR2 3V battery, which isn’t included.
- Available with red, white, blue or green LEDs; no receiver is included.
Make sure it’s the right one. This review covers the Nash Siren S5 standalone bite alarm, not a receiver set or the larger Siren range.
Tackle Index Score
Tackle Index score
A compact and capable standalone alarm that scores well for simple sessions, though the lack of a receiver and limited Night Glo compatibility narrow its appeal.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality8.8/10
- Performance8.9/10
- Impact on Fish Catching8.6/10
- Ease of Use9/10
- Value for Money8.5/10
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Who it suits
Is it right for you?
Great for
- Anglers after a compact standalone alarm. It covers the core jobs without dragging a receiver, charging system or loads of extra gubbins onto the bank.
- Nash Slaphead or Bobbin users. The brass thread lets the S5 connect directly to those kits, keeping the setup neat and nicely matched.
Maybe skip if
- Anglers who need remote alerts. There’s no receiver included, so you’ll need to stay within earshot of the rods.
- Siren Night Glo Swing Arm or Bobbin users. The S5 isn’t compatible with those Night Glo accessories, so check your existing setup before buying.
The lowdown
Introducing the Nash Siren S5
A tiny standalone alarm with plenty of volume, sensitive indication and a few handy Nash touches. Just don’t expect a receiver or Night Glo compatibility.
- Compact standalone bite alarm with super-sensitive bite indication.
- High-output volume, run LED and latching LED.
- Powered by one CR2 3V battery, which isn’t included.
- Available with red, white, blue or green LEDs; no receiver is included.
Quick verdict
Our verdict
The Nash Siren S5 is a cracking little alarm for anglers who want simple, sensitive indication without lugging around a receiver system. It’s compact, loud and has useful run and latching LEDs for keeping tabs on what the line’s doing.
The main catches are straightforward: you need to buy a CR2 battery separately, there’s no receiver included, and it won’t work with Nash Siren Night Glo Swing Arms or Bobbins. Get your setup matched properly, though, and it’s a tidy bit of kit.
A compact and capable standalone alarm that scores well for simple sessions, though the lack of a receiver and limited Night Glo compatibility narrow its appeal.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 8.8/10
- Performance
- 8.9/10
- Impact on Fish Catching
- 8.6/10
- Ease of Use
- 9/10
- Value for Money
- 8.5/10
The compact build, brass thread, line guard and clear LED indication give it a tidy, well-considered feature set.
Super-sensitive indication and high-output volume cover the key jobs for close-to-the-rods fishing.
Reliable early indication can help you react to liners and careful pickups, provided sensitivity is set sensibly.
It’s a straightforward standalone alarm with simple battery power and direct compatibility with selected Nash kits.
The feature set is useful for the price bracket, but the separate battery and lack of receiver need factoring in.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Nash Siren S5
The Nash Siren S5 is a compact standalone alarm aimed at anglers who like to keep things simple. No receiver system. No massive alarm body taking over the buzzer bar. Just a small, sensitive unit designed to shout when a carp has picked up the rig and started moving. For a lot of sessions, mate, that’s all you really need. Especially if you’re fishing close in, tucked into the margins or sat within easy earshot of the rods.
Its biggest selling point is the size. The S5 keeps a low-profile presence on the setup, which is handy when you’re travelling light or building a neat little stalking or short-session outfit. It won’t dominate a compact alarm pod, and it’s easy to pop in the tackle bag without making the whole thing feel like you’re shifting house. Small doesn’t mean whisper-quiet here, either. Nash gives it high-output volume for clear indication.
The bite indication is described as super-sensitive, so it’s built for keeping an eye on line movement rather than waiting for a rod to launch itself off the rest. That matters when conditions are tricky. A cautious winter carp, a bit of tow or a fish edging away slowly can all produce less dramatic movement. Sensitivity needs setting sensibly, of course, but the S5 is aimed at picking up those early clues.
You also get a run LED and a latching LED. In plain English, that gives you more than just a quick chirp to work with. The LEDs help show what’s happened at the alarm, which is dead handy when you’re watching from the bivvy, chatting to a mate or checking the rods after a bit of commotion. It makes those subtle liners and stop-start movements easier to keep tabs on.
There’s a built-in line guard too. That’s a useful little touch on a compact alarm, particularly when you’re fishing with slack or semi-slack lines and want things sitting neatly through the alarm. It helps keep the line where it needs to be, rather than letting it wander away from the sensing area. As ever, get the line angle and rod position right and the whole presentation becomes much more reliable.
Power comes from one CR2 3V battery. The S5 is designed with extended battery life in mind, which is reassuring if you’re putting in long nights or stringing several sessions together. The only slight faff is that the battery isn’t included. That’s easy enough to sort, but don’t leave it until you’re unloading at the lake. Keep a spare CR2 in the tackle box and you’re laughing.
The alarm is available with red, white, blue or green LED options, so you can choose the look that suits your rods and setup. That colour choice is more than a bit of decoration if you run different alarms and want to identify each one quickly in the dark. It also gives you a chance to match your existing gear rather than ending up with a random rainbow on the bar.
The brass thread allows direct connection to Nash Slaphead and Nash Bobbin kits, which keeps the whole indicator arrangement clean and straightforward. That’s a proper bonus if you’re already in the Nash ecosystem. But pay attention to the compatibility list: the S5 isn’t compatible with Siren Night Glo Swing Arms or Bobbins. That could be a real gut punch if you’re buying it to replace an alarm in an existing Night Glo setup.
What you don’t get is a receiver. That isn’t a flaw if you’re fishing close by and want a basic, reliable audible alarm. It does matter if you like sitting well away from the rods, cooking up a brew in the bivvy or keeping quiet on a busy night. The S5 is best understood as a compact alarm for direct, on-the-bank indication. Pick it for that job and it makes plenty of sense.
Specifications
The nuts and bolts
- Type
- Compact standalone bite alarm
- Power
- 1 × CR2 3V battery
- Battery included
- No
- LED options
- Red, white, blue or green
- Indication
- Super-sensitive bite indication, high-output volume, run LED and latching LED
- Compatibility
- Brass thread for direct connection to Nash Slaphead and Nash Bobbin kits; not compatible with Siren Night Glo Swing Arms or Bobbins
Specs checked with Nash, Oct 2026.
Spot a model or spec change?
Our take
The angle
Small alarms can sometimes feel a bit compromised, but the S5 keeps things nicely focused. It gives you the essentials for bite indication, adds a built-in line guard and keeps the footprint compact on the buzzer bar.
This is the sort of alarm that suits a simple overnighter, a stalking setup or a traditional two- or three-rod arrangement where you’re happy fishing within earshot. It’s not trying to be a full remote-alert system. That’s actually part of the appeal.
What you’re buying
A little alarm with the useful bits covered
The Siren S5 keeps the package compact but still brings proper functionality: sensitive bite indication, high-output volume, a run LED, a latching LED and a built-in line guard. That’s a useful mix for standard carp and coarse setups, whether you’re fishing tight to the margins or clipped up to an island.
Power comes from one CR2 3V battery, with extended battery life designed to reduce the amount of battery faff across longer sessions. The LED colour is your choice of red, white, blue or green. There’s no receiver, so this is a direct alarm-to-angler setup rather than a remote-alert package.
Worth knowing. The battery isn’t included. Also, the S5 connects directly to Nash Slaphead and Bobbin kits through its brass thread, but it isn’t compatible with Siren Night Glo Swing Arms or Bobbins.
Best on the bank
Ideal for simple, close-to-the-rods fishing
This alarm suits anglers who want to hear and see what’s happening without adding a receiver to the kit list. It’s a tidy choice for short sessions, stalking, margin fishing and regular overnight work where you’re fishing within earshot. The compact body also makes sense when space on the bar or in the tackle bag is tight.
It’s particularly logical for Nash users already running Slaphead or Bobbin kits. The direct brass-thread connection keeps the indicator arrangement neat and avoids unnecessary adapters or extra bits. Just check your exact indicator setup before ordering, especially if you’re using Night Glo hardware.
If your normal routine involves leaving the rods while you’re a long walk away, or you rely on a receiver to keep you informed from the bivvy, this isn’t the right style of alarm. There’s no remote box to carry the signal around the swim.
Before you buy
The questions that matter
Does the S5 need a special setup? Not really. Fit the correct CR2 3V battery, mount the alarm on your buzzer bar, run the line through the built-in guard and pair it with a suitable indicator. Keep the rod angle and line tension sensible so the sensitivity works for the conditions rather than reacting to every bit of tow.
Is it suitable for night fishing? Yes, provided you’re happy fishing without a receiver. The high-output volume helps with audible indication, while the run and latching LEDs give you a visual clue when you’re checking the rods or watching from nearby. Choose the LED colour that best suits your preference and setup.
Should you buy it for an existing Nash Night Glo setup? Check carefully first. The S5 works directly with Nash Slaphead and Bobbin kits, but it doesn’t work with Siren Night Glo Swing Arms or Bobbins. That compatibility point is the one most likely to save you a proper headache.
On paper
Pros & cons
What we like
- Compact and easy to keep on a buzzer bar or in the tackle bag.
- Sensitive indication with high-output volume.
- Run and latching LEDs make activity easier to read.
- Brass thread works directly with Nash Slaphead and Bobbin kits.
Worth knowing
- CR2 3V battery isn’t included, so pack one before heading to the lake.
- No receiver, making it less suitable if you need remote bite alerts.
- Not compatible with Siren Night Glo Swing Arms or Bobbins.
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Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01Does the Nash Siren S5 come with a receiver?
Does the Nash Siren S5 come with a receiver?
No. The S5 is a standalone bite alarm, so there’s no receiver included.
02What battery does the Nash Siren S5 use?
What battery does the Nash Siren S5 use?
It uses one CR2 3V battery. The battery isn’t included, so stick one in your tackle bag before a session.
03Which Nash indicators work with the S5?
Which Nash indicators work with the S5?
Its brass thread allows direct connection to Nash Slaphead and Nash Bobbin kits. It isn’t compatible with Siren Night Glo Swing Arms or Bobbins.
What anglers say
The word from the bank
Our read: our verdict. The strongest reasons to choose it are compact and easy to keep on a buzzer bar or in the tackle bag. and sensitive indication with high-output volume.; the main trade-off is cr2 3v battery isn’t included, so pack one before heading to the lake..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Compact and easy to keep on a buzzer bar or in the tackle bag.”
Best fit
Checked Sept '26 — “Anglers after a compact standalone alarm: It covers the core jobs without dragging a receiver, charging system or loads of extra gubbins onto the bank.”
Worth knowing
Checked Sept '26 — “CR2 3V battery isn’t included, so pack one before heading to the lake.”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Nash Siren S5
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Owner reports
Own this? Help the next angler.
Quick multiple-choice reports from people who say they own the Nash Siren S5. Not verified purchases, and kept separate from our score.
No owner reports yet.
Alternatives & go-withs
