*
Hardware can not withstand negative voltage. Please take care when connecting a power device.
**
At temperatures above 100°C, it is possible for the board circuitry to lose programmed memory.
***
****
If application exceeds 1000 ppm the sensor will return a maximum reading of 1000 ppm.
At ambient conditions (25 ºC, 50% RH)
KWJ WSN, SPEC are trademarks of KWJ Engineering Inc.
©2014 KWJ Engineering Inc. All Rights Reserved.
KWJ Engineering Inc
8430 Central Ave.
Suite C
Newark, CA 94560
510-794-4296
www.kwjengineering.com
For more information about our products or to place an order, please
contact our sales department at 1-800-472-6626.
Visit us on the web at
www.kwjengineering.com.
Technical Specifications
Supply Voltage
2.0 - 3.6 VDC *
Current Consumption
0.7 µA (sleep mode)
2 mA (radio idle/off mode)
2 mA (measurement mode)
25 mA (radio RX mode)
35 mA (radio TX mode)
Operating Temperature Range (Board Circuitry and Coin Cell)
-7°C to +60°C ( 20°F to +140°F )**
Optimal Battery Temperature Range (Coin Cell)
+10°C to +50°C ( +50°F to +122°F )
Optimal CO Sensor Temperature Range
-10°C to +40°C
Optimal CO Sensor Humidity Range
5% to 95% RH
Operating Range
0 - 1,000 ppm ***
Accuracy
± 5% ****
Certifications
Industry
Canada
900 MHz product; FCC ID: ZTL- RFSC1 and IC:
9794A-RFSC1. 868 and 433 MHz product tested
and found to comply with: CISPR 22:2008-09 / EN
55022:2010 - Class B and ETSI EN 300 220-2 V2.4.1
(2012-05).
Caution/Notice:
The KWJ-WSN CO will deliver essential information about low level and immediately dangerous levels of CO via the
KWJ-WSN Dashboard, text message and email alerts.
PLEASE NOTE THE KWJ-WSN CO DOES NOT INCLUDE AN
AUDIBLE ALARM. WE RECOMMEND YOU INSTALL A KWJ AUDIBLE ALARM (SOLD SEPARATELY) OR A SUPPLE-
MENTAL UL RECOGNIZED CO ALARM TO AUDIBLY ALERT YOU TO DANGEROUS CONCENTRATIONS OF CO.
This product is designed for application in an ordinary environment (normal room temperature, humidity and atmospheric
pressure). Use of the sensor under the following conditions can deteriorate the product characteristics and cause prema-
ture failures and burn-out.
•
Corrosive gas or deoxidizing gas - chlorine gas, hydrogen sulfide gas, ammonia gas, sulfuric acid gas, nitric oxides
gas, etc.).
For gas sensing in harsh environments, please inquire about the KWJ-WSN CO Industrial package.
•
Volatile or flammable gas.
• Dusty conditions.
• Under extreme low or high pressure.
• Wet/excessively humid locations, or excessivley dry locations.
• Places with salt water, oils, chemical liquids, or organic solvents.
• Where there are excessively strong vibrations.
• Other places where similar hazardous conditions exist.
Use this product within the specified temperature range. Higher temperature
may cause deterioration of the characteristics or the material quality of
this product.
