Everything you need to get started with Fluctus.

SKU 1002 · v2.0 · May 2026
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In this guide

Fluctus is a connected carcass scale that weighs your game and syncs the weight directly to the Tendy app over Bluetooth. Hang it up, turn it on, and start weighing.

This guide covers setup, safety, everyday use, and what to do if something stops working.

Batteries not included. Fluctus is powered by three AAA batteries that you insert yourself. We recommend using high-quality batteries. See section 5 for more details.

Missing something from the box? Contact [email protected] before using the device.

1. ON/OFF - Power on/off.

2. UNIT - Change unit of measurement.

3. TARE - Zero (tare) and lock.

4. Display - LCD with backlight.

5. Hanging loop - for hanging the scale.

6. Hook - stainless steel hook where you hang the load.

7. Battery compartment - for three AAA batteries.

Intended use. Fluctus is a connected hanging carcass scale for non-professional use. It weighs, for example, game carcasses and syncs the weight to the Tendy app over Bluetooth. Any other use is outside the intended use.

Not for trade use. Fluctus is not intended to be used as a scale in trade where the price is determined by weight. It is therefore not a non-automatic weighing instrument for commercial use under Directive 2014/31/EU.

Safe lifting. Make sure the hook and hanger are securely fastened before loading the scale. Never stand, and never allow anyone else to stand, under the suspended load. Avoid impacts and jerks when using the scale, and do not load it with more than 300 kg.​

Batteries
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Fluctus is powered by three AAA batteries. Insert the batteries in the correct direction as indicated by the markings (+ and −) in the battery compartment. Do not mix old and new batteries, and do not mix different battery types or brands. Do not attempt to charge ordinary alkaline batteries. Remove the batteries if you are not going to use the scale for a long time, to avoid leakage. Dispose of used batteries at a battery collection point, not in household waste.
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Service

There are no user-serviceable parts inside, other than the batteries. For service, contact [email protected].
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Auto power-off. If the weight does not change and no button is pressed for 120 seconds, the scale will turn itself off to save battery.

Always make sure the scale is turned off and unloaded before inserting or replacing batteries.

Replace batteries in time. When the display shows "LO", the batteries are almost depleted. Replace all three at the same time with new batteries of the same type.

Fluctus weighs up to 300 kg. Accuracy is approximately 50 g between 150 g and 100 kg, and approximately 100 g between 100 and 300 kg. The minimum weight for accurate weighing is 150 g.

Press TARE. The display resets to zero and blinks three times. For example, hang an empty carcass hook or bag first, press TARE, and then hang the load. The scale will then show only the weight of the load.

Hold UNIT for 2 seconds. A beep sounds and the scale switches unit. There are three units: kilograms (kg), pounds (lb), and ounces (oz).

The lock function holds the weight on the display, which is useful when the load is swinging. Hold TARE for 2 seconds while the scale is on. A beep sounds and the display shows "L_ON" or "L_OF". "L_ON" means automatic locking: the scale locks the weight automatically once it has stabilised. "L_OF" means manual locking: you lock the weight by pressing UNIT.

Fluctus has dynamic backlight. If no button is pressed and the weight does not change for 20 seconds, the backlight turns off automatically. It turns back on as soon as you press a button or the weight changes.

The Tendy app pairs with Fluctus over Bluetooth. Once paired, the weight you measure syncs directly to the app.

Search for Tendy on Google Play or the App Store, or scan the QR codes below:

If you are not going to use Fluctus for a long time, remove the batteries and store the scale in a dry, cool place. This prevents the batteries from leaking and damaging the scale.

Having problems with your Tendy Fluctus? Start with the error codes below.

You can find more guides and answers on the Tendy Fluctus support page HERE.

Can't figure it out? Email [email protected] and we'll help you.
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Cybersecurity (RED 3.3 d/e/f)

Fluctus does not connect to the internet and stores no personal data on the device. Bluetooth pairing requires user confirmation in the Tendy app. Any firmware updates are signed and delivered via the app. Fluctus is designed to comply with the standards in the EN 18031 series under RED Articles 3.3(d), (e), (f).

The complete technical documentation and EMC and radio test reports are held by Tendy AB and can, upon reasonable request, be made available to competent authorities via [email protected].

Simplified EU declaration of conformity in accordance with Article 10(9) of Directive 2014/53/EU. The full DoC is available on Tendy's website here: Fluctus Declaration of Conformity (https://support.tendy.se/sv/articles/14893734-fluctus-declaration-of-conformity).

EN. Hereby, Tendy AB declares that the radio equipment Tendy Fluctus is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: tendy.se/doc/fluctus

SV. Härmed försäkrar Tendy AB att denna typ av radioutrustning Tendy Fluctus överensstämmer med direktiv 2014/53/EU. Den fullständiga texten till EU-försäkran om överensstämmelse finns på: tendy.se/doc/fluctus

NO. Tendy AB erklærer herved at radioutstyret av typen Tendy Fluctus er i samsvar med direktiv 2014/53/EU. Den fullstendige teksten i EU-samsvarserklæringen er tilgjengelig på: tendy.se/doc/fluctus

DA. Hermed erklærer Tendy AB, at radioudstyrstypen Tendy Fluctus er i overensstemmelse med direktiv 2014/53/EU. EU-overensstemmelseserklæringens fulde tekst kan findes på: tendy.se/doc/fluctus

FI. Tendy AB vakuuttaa, että radiolaitetyyppi Tendy Fluctus on direktiivin 2014/53/EU mukainen. EU-vaatimustenmukaisuusvakuutuksen täysimittainen teksti on saatavilla osoitteessa: tendy.se/doc/fluctus

DE. Hiermit erklärt Tendy AB, dass der Funkanlagentyp Tendy Fluctus der Richtlinie 2014/53/EU entspricht. Der vollständige Text der EU-Konformitätserklärung ist verfügbar unter: tendy.se/doc/fluctus

PL. Tendy AB niniejszym oświadcza, że typ urządzenia radiowego Tendy Fluctus jest zgodny z dyrektywą 2014/53/UE. Pełny tekst deklaracji zgodności UE dostępny jest pod adresem: tendy.se/doc/fluctus

FR. Le soussigné, Tendy AB, déclare que l'équipement radioélectrique du type Tendy Fluctus est conforme à la directive 2014/53/UE. Le texte complet de la déclaration UE de conformité est disponible à : tendy.se/doc/fluctus

ES. Por la presente, Tendy AB declara que el tipo de equipo radioeléctrico Tendy Fluctus es conforme con la Directiva 2014/53/UE. El texto completo de la declaración UE de conformidad está disponible en: tendy.se/doc/fluctus

IT. Il fabbricante, Tendy AB, dichiara che il tipo di apparecchiatura radio Tendy Fluctus è conforme alla direttiva 2014/53/UE. Il testo completo della dichiarazione UE di conformità è disponibile al: tendy.se/doc/fluctus
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Electronic waste. The symbols on the product, its accessories, or packaging indicate that the device must not be treated as unsorted household waste, but must be collected separately. Dispose of the device at a collection point for the recycling of electrical and electronic waste (WEEE) if you live within the EU or in other European countries that have separate collection systems for such waste. By disposing of the device correctly, you help prevent possible risks to the environment and human health that could otherwise arise from improper waste handling. Recycling materials helps conserve natural resources.

Recycle the packaging separately in accordance with local regulations. Sort cardboard with paper, plastic film with plastic, and any metal parts separately. In France, the Triman logo and the Info-Tri sorting guide apply to the packaging.

Standard warranty. Tendy AB warrants Fluctus against defects in materials and workmanship for 12 months from the date of purchase, provided it has been used normally and in accordance with the conditions set out in this guide. Keep your receipt as proof of purchase.

What is covered. Manufacturing defects that affect normal function. We will repair the product, replace it, or provide a refund at our discretion.

What is not covered. Damage from accidents, drops, liquids, unauthorised repairs, normal wear and tear, leaking batteries, or use outside the intended use described in section 3.

This warranty does not affect your statutory rights as a consumer under EU law and national law. Some markets give you stronger rights than our standard warranty:

In all cases, the longer of the two periods applies. To open a case, email [email protected] with your order number and a brief description.

Tendy AB
Roslagsgatan 32 · 113 55 Stockholm · Sweden
Org.nr 559477-9778
​[email protected]
​tendy.se