VMANX Flexible Film Bed Exit & Fall Prevention System
Product Datasheet
Brand: VMANX
Product Type: Flexible film pressure sensing system
Core Functions: Bed exit alarm, occupancy sensing, pre-departure warning, fall prevention
Target Users: Rehabilitation patients, post-surgery individuals, elderly with limited mobility, wheelchair users
Caregivers: Family members, nursing staff, hospitals, home care providers
1. Application-Specific Terminology
Term Description
Bed Exit Alarm Automatically triggers when the user completely leaves the sensor area.
Predeparture Warning Detects pressure shift or edge unloading 3-5 seconds before actual exit; alerts caregiver in advance.
Posture Pressure Mapping Real-time detection of sitting / lying posture.
Occupancy / Vacancy Dual Status Receiver clearly shows “occupied” or “vacant”.
Wireless Bridge Monitoring No cables between sensor and receiver; low-power RF link.
Adjustable Pressure Threshold Different thresholds for wheelchair, sofa, or bed to prevent false triggers.
2. Product Dimensions & Applications
Model Size Application Function
VMANX-SS (Small Square) 30×30 cm Wheelchair seat, sofa cushion Sitting occupancy detection, rise warning
VMANX-LR (Long Rectangular) 30×80 cm Bed surface (edge or full width) Bed exit detection, edge-shift warning
💡 Custom sizes available upon request (including larger areas or special shapes).
3. System Operation Logic
3.1 Installation & Pairing
30×30 cm sensor – Place under wheelchair or sofa cushion.
30×80 cm sensor – Lay horizontally on top of the mattress, under the bedsheet, preferably near the user’s side (bed edge).
Connect sensor to wireless transmitter (wired). Pair transmitter with caregiver receiver (one receiver can bind multiple sensors).
3.2 Behavior Logic Table
User State Sensor Signal Transmitter Action Receiver Feedback
Normally seated / lying (pressure ≥ threshold) Stable pressure “Occupied” heartbeat every 30 sec Green LED, silent
Attempting to rise / shifting to edge Rapid pressure drop or edge pressure loss Instant “pre-departure warning” Yellow LED + soft beep
Completely left (pressure < threshold for ≥2 sec) Vacant state confirmed “Bed exit alarm” Red LED + loud buzzer + vibration
False trigger (pet/blanket/pillow) Irregular low pressure No alarm (requires steady pressure ≥3 sec) Ignored
3.3 Reset / Acknowledge
Caregiver presses silence/acknowledge button on receiver after checking the user. System resets and resumes monitoring.
4. Technical Specifications
Parameter 30×30 cm (Wheelchair/Sofa) 30×80 cm (Bed)
Dimensions 300×300×1.2 mm 300×800×1.2 mm
Active sensing area 280×280 mm 280×780 mm
Sensing material Piezoresistive flexible film Same
Minimum trigger pressure 5 kg (adjustable) 8 kg (adjustable)
Max load 150 kg 200 kg
Wireless communication 433 MHz / 2.4 GHz (optional) Same
Wireless range ≤100 m (open), ≤30 m (indoor) Same
Transmitter power CR2450 battery (6 months) Same
Receiver power USB rechargeable Li-ion (72h standby) Same
Alarm methods Receiver: 80dB buzzer + tri-color LED + vibration Same
Operating temp -10°C ~ 50°C Same
Water resistance IP54 (splash-proof, disinfectant-safe) Same
All dimensions can be customized (longer, wider, round, etc.) per client request.
5. Wireless System Architecture
[30×30 sensor] ──→ [Wireless transmitter] ──┐
[30×80 sensor] ──→ [Wireless transmitter] ──┼──→ [Caregiver receiver]
(Multiple sensors can share one receiver) (handheld / lanyard / desk)
· Transmitter: Built-in signal processor, 3 sensitivity levels, can be hidden on wheelchair or bed frame.
· Receiver: Supports up to 5 sensors simultaneously; displays bed/seat ID and status via LCD or LEDs.
6. Typical Use Cases (Website Copy)
Case 1 – Night-time bed exit prevention for elderly
Place the 30×80 cm long sensor on the bed edge. When the user shifts toward the edge, the system sends a “pre-departure” warning to the caregiver’s receiver. The caregiver arrives in time to assist, avoiding a fall.
Case 2 – Wheelchair posture monitoring
Place the 30×30 cm square sensor under the wheelchair cushion. If the user tries to stand or slides forward, the receiver alerts the family member immediately.
7. Ordering Information
Model Description Included Items
VX-SS30 Square system for wheelchair/sofa 30×30 sensor ×1, transmitter ×1, receiver ×1
VX-LR30 Long rectangular system for bed 30×80 sensor ×1, transmitter ×1, receiver ×1
VX-RX-ADD Extra receiver Handheld receiver ×1, lanyard ×1
For custom sizes or bulk orders, please contact your VMANX sales representative