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Roswell GA 30076
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   Thermal Gas Systems Refrigerant Leak Detection and Monitoring Systems...

PARKGUARD S/T wireless

Wireless CO detection and ventilation control system.

Developed for large enclosed parking structures. 24 Hour Carbon Monoxide Wireless Sensor/Transmitter using industry leading XBee-Pro® DigiMesh wireless mesh architecture.

PARKGUARD S/T-Wireless parking garage CO sensor/transmitter system features an integrated mesh network of wireless transmitters and central controller. The PARKGUARD central controller interfaces with standard independent programmable logic controllers (PLCs), distributed control systems (DCSs), energy, and building management systems (BMS). The PARKGUARD Sensor/Transmitter continuously monitors CO concentrations. If CO values exceed set limits, dampers, supply and exhaust fans are engaged via wireless remote relay modules. PARKGUARD CO monitoring satisfies local code requirements and reduces energy costs required for ventilation of enclosed areas used for vehicle parking, repair and operation.

APPLICATIONS: Single or multi-level, enclosed, vehicular structures including; parking garages, truck loading docks, vehicle maintenance facilities, airplane hangers, tunnels and warehouses where an accumulation of hazardous gases may occur.

See the Parkguard Press Release at:


  • Multi-zone, multi-sensor system utilizing electro-chemical gas detection.
  • Long-lived , plug-in, battery/sensor cartridge eliminates need for separate sensor battery replacement schedules.
  • Immediate savings with wireless installation.
  • Reduce energy costs, reduce ventilation maintenance costs. Why run ventilation systems when you don’t have to?
  • Low system maintenance.
  • Factory-direct support.

Sensor Specifications*

Sensing Method: Electrochemical
Approval: Meets UL2034, EN50291 and RoHS requirements
Sensor Rated Life: 5 years at 20°C/50% RH
Sensor Battery Life: 3 - 5 years depending on user settings
Operating Ranges
Temperature: -10°C to +60°C (continuous)
-40°C to +70°C (intermittent)
Humidity: 5-99% RH Non-Condensing
Performance Characteristics (at 20°C/50% RH)
Available Ranges: 0-100ppm thru 0-200ppm
Resolution: 1ppm; Sensitivity 1ppm
Repeatability: +/-5% of measured value
Linearity: Linear over measured value
Response Time: T90 = less than 60 seconds
Electrical Properties
Operating Voltage: 10 to 30VDC
Output Signal: 4/20mA, 2 wire loop powered
4-wire RS485, 24 VDC
Wireless Option
Technology: XBee-Pro® DigiMesh
Network: Mesh
Indoor/Urban Range: Up to 450 ft
Outdoor/Line-of-site: Up to 1.8 miles
RF Data Rate: 250 kbs
Supply Voltage: 2.8-3.4V
Transmit Current (typical): 215 mA
Idle/Receive Current (typical): 80 mA
Power Down Current: <60 μA
Frequency: ISM 2.4 GHz
Antenna: External
Enclosure: ABS Plastic, UL94V-O, NEMA 4/12/13 rated
Weight: 12 oz
Size: 4” x 4” x 3”

* Specifications subject to change

Warranty (click for details)

PARKGUARD® is guaranteed for one year from the date of shipment. Any device found defective in that period will be repaired or replaced free of charge. Read terms and conditions of sale for complete warranty information.

Documents Available for Download (click for complete listing)