Large-display handheld pulse oximeter: a 4-inch screen that keeps SpO2, pulse rate and plethysmogram readable at a distance during procedures and recovery.
Product Overview
The VM4 is the large-display model of our handheld pulse oximetry range. Its 4-inch high-resolution TFT screen presents SpO2, pulse rate and the plethysmogram in larger digits and a wider waveform than pocket-size units, so readings stay legible from across the table while the clinician’s hands are occupied.
The VM4 measures through the tongue or ear using photoelectric oxyhemoglobin detection, with an optional temperature channel, motion-artifact rejection and three-level alarms. It suits sedation, dental and minor procedures, and recovery monitoring where a handheld unit is preferred over a bedside monitor.
Key Features
- 4-inch high-resolution TFT screen: larger digits and plethysmogram for reading at a distance
- SpO2 and pulse rate standard; temperature channel optional
- Digital oximetry with motion-artifact rejection
- Stable acquisition under weak perfusion
- Audible, text and visual alarms in three priority levels
- Rechargeable lithium battery for continuous monitoring
- Compatible with data-analysis software; multi-language interface
Visual Evidence & Media
Technical Specifications
| Display | 4-inch high-resolution TFT |
| Parameters | SpO2, PR; temperature optional |
| Measurement Site | Tongue or ear |
| SpO2 Range | 0–100%; resolution 1% |
| SpO2 Accuracy | 70–100%: ±4% (non-moving state); 0–69% not defined |
| Pulse Rate | 30–240 bpm; accuracy ±3 bpm (non-moving state); resolution 1 bpm |
| Temperature (optional) | 0–50 °C; accuracy ±0.1 °C; resolution 0.1 °C |
| Alarms | Audible, text and visual; three levels |
| Battery | Rechargeable lithium, 850 mAh |
| Working Time | 4 h (new, fully charged battery at 25 °C; continuous SpO2, minimum backlight, sound off) |
| Operating Environment | 5–40 °C; 15–80% RH, non-condensing; 86.0–106.0 kPa |
| Storage Environment | -20–50 °C; 10–95% RH, non-condensing; 55.0–106.0 kPa |
| Dimensions | [TBC] |
| Weight | [TBC] |
| Packaging | [TBC] |
Clinical Applications
- SpO2 and pulse-rate monitoring during sedation, dental and minor procedures in canine and feline patients
- Recovery monitoring where the display must be read from outside the cage
- Triage of respiratory cases in emergency settings
- Ambulatory and equine field work where a larger display aids reading in variable light
- Combined SpO2 and temperature assessment with the optional temperature channel
Workflow & Operating Notes
- Attach the SpO2 sensor to the tongue (sedated or anesthetized patients) or to the ear
- Power on with the left key; use the arrow keys and M key to navigate settings and alarm limits
- Place or hold the unit where the 4-inch display remains in the clinician’s line of sight
- Transfer stored data to compatible analysis software for review
Package Contents
- 1 × VM4 handheld pulse oximeter
- 1 × Veterinary SpO2 sensor
- 1 × Temperature probe (temperature configuration)
- Charging accessories [TBC]
- 1 × User manual
Downloads & Documentation
Product brochure and user manual are available on request — contact our sales team.
Why Choose the VM4
- Workflow efficiency: a 4-inch display that can be read without picking the unit up, keeping hands free during procedures
- Clinical accuracy: motion-artifact rejection, weak-perfusion performance and a clearly visible plethysmogram to judge signal quality
- Practice economics: continuous SpO2 surveillance for sedation and recovery without assigning a bedside monitor; choose the VM2 for pocket-size spot-checks
Warranty & Support
Warranty terms for the main unit are confirmed at the time of order. Probes, cuffs, cables and other accessories follow standard wear-item terms.
Frequently Asked Questions
- How does the VM4 differ from the VM2?
- The VM4 has a 4-inch display for reading at a distance during procedures and recovery. The VM2 has a 2.4-inch display in a pocket-size body for quick spot-checks and mobile work. Measurement specifications are the same.
- Where is the sensor placed?
- On the tongue or the ear. Tongue placement is typical in sedated or anesthetized patients.
- Can it measure temperature?
- Yes, with the optional temperature channel: 0–50 °C with ±0.1 °C accuracy.
- How long does the battery last?
- Up to 4 hours of continuous SpO2 monitoring from the 850 mAh lithium battery under the stated test conditions.
- Which species does it cover?
- The application range covers canine, feline and equine patients.
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