Official Support Center

Your Health,
Supported.

Everything you need for your Avenra blood pressure monitor — product guides, warranty coverage, and direct email access to our support team.

Contact Support Submit a Ticket
support@avenracare.com — Fastest way to get help
AVENRA
NORMAL
118 / 76
mmHg
USER 1 72 BPM 2026.08.31

FDA Cleared

510(k) K251102 certified

1-Year Warranty

Full coverage from purchase date

24h Response

Business day email support

Rechargeable

Built-in lithium battery, USB-C

Product Support

Everything for your monitor

Download manuals, view specifications, and get started with your blood pressure monitor in minutes.

CH-S691L

Upper Arm Blood Pressure Monitor

  • Measurement MethodOscillometric
  • Pressure Range0 – 300 mmHg
  • Pulse Range40 – 199 bpm
  • Memory2 users × 99 records
  • PowerRechargeable Li-ion
  • Cuff Size22 – 42 cm arm
  • DisplayColor LCD with 3-color indicator
User Manual (English)

PDF · Full operation guide · 23.5 MB

→
MSDS — Safety Data Sheet

PDF · Battery & product safety · 0.9 MB

→
UN38.3 — Battery Test Report

PDF · Lithium battery transport certification · 1.7 MB

→
FDA 510(k) Certificate — K251102

PDF · Official FDA clearance document

→

Quick Start — 4 Steps

1

Charge the device

Connect the USB-C cable to a power adapter. A full charge takes approximately 3 hours and provides up to 200 measurements.

2

Attach the arm cuff

Wrap the cuff around your bare upper arm, 2–3 cm above the elbow. The artery marker should align with your brachial artery.

3

Select user and start

Press the USER button to select User 1 or User 2. Press START to begin measurement. Remain still and quiet during the reading.

4

Read and save

Your systolic/diastolic pressure and pulse appear on screen. The 3-color indicator shows your blood pressure category. Results are saved automatically.

Video Tutorials

Watch & Learn

Step-by-step video guides to help you set up, use, and get the most out of your blood pressure monitor.

Setup

How to Set Up Your Monitor

Unboxing, charging, cuff fitting, and first measurement — complete setup in under 5 minutes.

Tutorial · 81 MB
Usage

How to Use Your Monitor

Proper measurement technique, user switching, memory recall, and understanding your readings.

Tutorial · 66 MB
Customer Review

Real Customer Review — Austin Dad

See what real customers say about accuracy, ease of use, and overall experience with the monitor.

Review · 33 MB
Customer Review

Real Customer Review — Lori

Another honest customer review covering setup, daily use, and who this monitor is best for.

Review · 37 MB
Warranty

1-Year Limited Warranty

Your Avenra monitor is covered against manufacturing defects for one year from the date of purchase. Here is what is included.

What is Covered Included

  • Defects in materials or workmanship under normal use
  • Main unit (monitor body and display)
  • Arm cuff and air tube
  • Built-in rechargeable battery
  • USB charging cable
  • Free replacement or repair at our discretion

What is Not Covered Excluded

  • Damage from accidental drops, impact, or misuse
  • Water damage or exposure to extreme temperatures
  • Unauthorized disassembly or repair attempts
  • Normal wear and tear (cuff fabric, cosmetic scratches)
  • Use with non-Avenra accessories or incompatible power sources
  • Loss of stored data or consumable items

How to Make a Warranty Claim

1

Contact Us

Email our support team with your order number and a description of the issue.

2

Send Photos

Provide clear photos of the device, packaging, and any visible damage or error messages.

3

Get Approved

Our team reviews your claim within 24–48 business hours and confirms the next step.

4

Receive Replacement

Approved claims are resolved with a repaired unit or brand-new replacement shipped to you.

FAQ

Frequently Asked Questions

Quick answers to the most common questions about your blood pressure monitor.

For accurate readings, sit quietly for 5 minutes before measuring. Keep your arm supported at heart level, feet flat on the floor, and do not talk during measurement. Avoid caffeine, exercise, or smoking for 30 minutes before. Take 2–3 readings one minute apart and use the average. This monitor uses clinically validated oscillometric technology.
A full charge provides approximately 200 measurements. The device enters auto-sleep mode after 60 seconds of inactivity to conserve power. When the battery is low, a low-battery icon appears on screen. Charge using the included USB-C cable with any standard 5V/1A adapter. A full charge takes about 3 hours.
The 3-color backlight indicator categorizes your blood pressure according to WHO standards: Green (Normal) — systolic below 120 and diastolic below 80; Yellow (Elevated / High Normal) — systolic 120–139 or diastolic 80–89; Red (High) — systolic 140+ or diastolic 90+. This is a quick visual guide, not a medical diagnosis. Consult your doctor for interpretation.
Press the USER button on the device to toggle between User 1 and User 2 before starting a measurement. The selected user icon appears on the display. Each user stores up to 99 readings independently. To recall past measurements, press the MEM button while the device is on. Use the USER button to switch between users when viewing memory.
Common error codes: EE (measurement failed) — ensure the cuff is fitted correctly and you remain still; try again. E1 (air leak) — check cuff connections and tube for damage. E2 (abnormal pressure) — restart the device. Low battery icon — charge the device. If errors persist after troubleshooting, contact our support team with the error code and a photo of the screen.
Yes, this monitor can be used while connected to the USB charger. However, for best accuracy and battery longevity, we recommend using it on battery power. The device will not overcharge — the charging circuit automatically stops when the battery is full. Do not use fast chargers exceeding 5V/2A.
Wipe the monitor body with a soft, dry or slightly damp cloth. Do not use alcohol, benzene, or harsh chemicals. The cuff can be cleaned with a mild detergent and damp cloth — do not machine wash or submerge. Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Calibration is recommended every 2 years or if the device has been dropped.
Contact Support

We are here to help

Contact our support team by email. We read and respond to every message personally, usually within 24 business hours.

Support Ticket

Submit a Support Ticket

Fill out the form below and our support team will get back to you within 24 business hours. Fields marked with * are required. Order Number helps us locate your purchase quickly.

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