R9 Technology SN400 Bedienungsanleitung
User Guide
Copyright © 2021 R9 Technology Inc. All rights reserved. i
SN400 Sensor Node Hardware User Guide
January 2021
Release 1.7
R9 Technology
17217 Waterview Parkway Suite 1.202Y
Dallas, TX 75252
www.r9technology.com
User Guide
Copyright © 2021 R9 Technology Inc. All rights reserved. ii
Document Revisions
Date Version
Number Document Changes
09/28/2010 R1.4 Edit to pair button led flash info, other minor edits
01/11/2021 R1.5 Change DC adapter voltage to 3.0V, other minor edits.
01/21/2021 R1.6 Updated battery information
03/26/2021 R1.7 Updated battery information
User Guide
Copyright © 2021 R9 Technology Inc. All rights reserved. iii
Table of Contents
1 Introduction ................................................................................................................................................................ 4
2 SN400 Product Label ............................................................................................................................................... 5
3 Wireless Operating Band (Antenna) ................................................................................................................. 7
4 Power ............................................................................................................................................................................. 7
5 Indicators and Buttons ........................................................................................................................................... 9
6 Physical Dimensions ............................................................................................................................................. 11
7 Installation ................................................................................................................................................................ 11
8 Troubleshooting ..................................................................................................................................................... 13
9 Sales and Warranty Policy ................................................................................................................................. 13
6 Specifications ........................................................................................................................................................... 14
7 Certifications - United States FCC Statement ............................................................................................. 15
Copyright © 2021 R9 Technology Inc. All rights reserved. 4
1 Introduction
This User Guide covers specific hardware features of R9 Technologies model SN400 sensor
node. Several SN400 devices can accumulate electronic sensor data, and then wirelessly
transmit this sensor information to a single gateway device (wireless sensor network).
The gateway device will then use an LTE wireless data link to transfer this sensor data to
a database located on an internet-based server. The database can be used by customers
to view and analyze the gathered sensor information. Because the SN400 node has much
lower cost, complexity, and power requirement than the gateway device, the overall
system cost and flexibility is optimized.
The SN400 device’s position in the overall network can be seen in the diagram below.
The SN400 “Piconode” device is at the far-right end of the network diagram. It gathers
sensor information using wired sensors, which will, ultimately, be viewed and analyzed
on a user’s personal computer or smart device using a web-browser. Alerts which are
received via SMS text can also be implemented using the R9 web-based system.
The SN400 sensor node has four ports, each port can support one cabled sensor (for
example, temperature, humidity, door closure, tank liquid level, light level). It is also
possible to support multiple data types on one port, for example temperature and
humidity can be read from the same cabled sensor. Cabled sensors are plugged into the
SN400 using a three-pin connector. The connector is keyed, so the sensors cannot be
installed using the wrong orientation. Typically, each SN400 sensor port is provisioned
at the factory for a specific sensor type (analog, digital, specific communication format).
Therefore, specific sensors will need to be plugged into specific port numbers. The
Copyright © 2021 R9 Technology Inc. All rights reserved. 5
SN400 Installation Guide and R9 Online Portal User Guide contains information on
specific sensors and associated port numbers. Also, when onboarding your system on
the R9 web portal, you will be guided through the process of inserting wired sensors into
the SN400. The onboarding process is customized for specific sensing applications.
The sensor node device is typically mounted to equipment, and then cabled sensors are
applied to specific areas for sensing. For example, a node device is attached externally to
a refrigerator, and then a cabled temperature sensor is routed inside the refrigerator to
measure temperature.
For simple installations, the SN400 node can be installed inside a room, or
refrigerator/freezer, without cabling for the measurement of temperature. If installed
inside a refrigerator/freezer, wireless range may be diminished (typically by one third to
one half), but should be adequate for connection to a nearby gateway device.
The SN400 sensor node requires an external DC power source, or two AAA alkaline
batteries to operate. The sensor node does not have a power switch. When power is
applied by DC jack or insertion of batteries, the device will power on and automatically
begin to broadcast information to allow synchronization with, and connection to a nearby
gateway that is also powered on. Note that in order to pair with (connect to) a gateway
device, all sensor node devices should be setup first, using the online R9 portal. Refer to
the R9 Online Portal User Guide for information on how to onboard and configure the
gateway and sensor nodes in your monitoring system.
2 SN400 Product Label
The SN400 product label located on the side of the device will indicate several important
features of the device.
Copyright © 2021 R9 Technology Inc. All rights reserved. 6
1. The MAC ID, circled in red, in the picture below is unique to a specific SN400 device.
The last 5 digits of the MAC ID will be entered into the online portal system during
setup, and is used to identify the SN400 in the system. The last 5 digits of the serial
number is also entered.
2. The complete model number of the SN400 device indicates the specific
configuration of a particular device variant. For example, sensor port configuration,
wireless bands of operation, enclosure color, etc.
A typical model number is SN400-D1AAA. This part number indicates:
D1 – port configuration: Port 1 and 2 are set up for digital pulse counting, Port 3
is digital one wire, Port 4 is digital input.
A(1) - Antenna: Internal 915 MHz. ISM band antenna is provisioned and
selected.
A(2) - Power: Powered by internal AAA batteries.
A(3) - Enclosure: Indoor plastic case, color black.
In plain terms, the specific model/part number SN400-D1AAA has the following sensor
port configuration:
Port 1: temperature sensor (digital pulse count)
Port 2: temperature sensor (digital pulse count)
Port 3: dual sensor, humidity and temperature (bi-directional digital one wire)
Port 4: Door Ajar (digital input by switch open/close)
Consult the factory for more information on available SN400 model number variants.
Copyright © 2021 R9 Technology Inc. All rights reserved. 7
3 Wireless Operating Band (Antenna)
The SN400 will use only the 915 MHz. ISM band (United States) to wirelessly connect
to, and transmit/receive data from the gateway device. The frequency range of operation
is 902 MHz. to 928 MHz. The SN400 uses a frequency hopping algorithm to minimize
generated noise and improve immunity from external RF interference. An 868 MHz.
ISM band (European) version of the SN400 is also available (SN401).
The SN400 915 MHz. antenna is PCB mounted and located internally to the enclosure.
Note that it is possible to connect an external antenna to the SN400 device. This is
supported only as an option, and should not be necessary in a typical application.
4 Power
The SN400 sensor node requires an external DC power source, or two AAA alkaline
batteries to operate. Typical installations will always use batteries for power. When
power is applied by DC jack or insertion of batteries, the device will power on and
automatically begin to broadcast information to allow synchronization with, and
connection to a nearby gateway that is also powered on. Note that in order to pair with
(connect to) a gateway device, a sensor node device must have been configured
previously in the online R9 portal. Refer to the R9 Online Portal User Guide for
information on how to onboard and configure the gateway and sensor nodes in your
monitoring system.
The sensor node does not have a power switch. Remove the battery compartment lid
located on the rear of the SN400 and install 2 AAA batteries in the correct orientation
(marked on battery holder) and replace lid. To open the battery lid, pull the small tab
toward the door, and lift at the same time (using your finger nail or small screw driver).
DC Power Supply: when using a DC power adapter, sensor values will not update if wall
power is interrupted. For this reason, it is not recommended to use a DC wall adapter,
unless absolutely necessary. Contact R9 Technology to purchase a DC wall adapter.
The power supply is +3.0V, center pin positive. The DC power supply can be
inserted into the sensor node without removing batteries.
The DC power supply must be plugged into a 120V 60Hz. AC wall outlet if
operating in the United States. The DC Jack output is then plugged into the
power input port on the SN400.
Copyright © 2021 R9 Technology Inc. All rights reserved. 8
An optional 220V AC, 50 Hz supply will be required in most parts of Europe
or Asia.
Batteries:
The sensor node can be powered from 2 AAA alkaline batteries. The
expected battery life will vary for each specific application. Average battery
life-span is approximately 2 years for the “Safezone” application (two
temperature probes and 15-minute reporting interval).
Batteries are not supplied with the sensor node, and should be inserted by
the customer at the time of SN400 installation. If the sensor node device is
not to be used for a long period of time, the batteries should be removed to
prevent their depletion.
o AAA alkaline batteries are recommended (can be purchased from
drug store, shopping center, etc.). AAA alkaline cells provide the
best value in terms of cost and battery longevity, at room
temperature conditions. Alkaline batteries are ok for use inside a
refrigerator (temperatures down to about 35F), although the
longevity will likely be reduced.
o Lithium AAA batteries: Lithium batteries should be used in
extreme cold environments (sensor node located inside a freezer
with temperature below 0F or -18C). Alkaline batteries do not
operate optimally at temperatures below 0F or -18C. Lithium
chemistry batteries operate at temperatures down to approximately
-40F = -40C. It is best to use Lithium batteries in freezer
environments (temperatures below 32F). Do not confuse Lithium
AAA cells with Lithium polymer rechargeable batteries.
o Rechargeable AAA batteries: recently, several types of AAA
equivalent rechargeable batteries have become commonly available.
NiMH (nickel metal hydride) AAA rechargeable cells have been
tested with the sensor node. NiMH cells have significant self-
discharge, and will lose 5%-20% of their charge per month.
Although rechargeable cells function, they are not recommended as
they require more frequent re-charging as compared to alkaline
cells.
Copyright © 2021 R9 Technology Inc. All rights reserved. 9
5 Indicators and Buttons
1. Reset Button (R) – Momentary “quick” press resets the SN400 to power-on
condition (initialize). The LED will quickly flicker red/green during power-on, or
when reset button is pressed.
2. Pair Button (P) – Momentary “quick” press will use the LED to indicate paired status
of the Node (to Gateway). See table on next page for pair button operation.
3. Power Input Port – Utilized for input of external DC power (3.3V) using DC jack.
External power supply sold separately.
4. Sensor Ports – Utilized to connect external, wired sensor probes.
5. Pair/Reset LED – Indicates SN400 network paired status, as well as reset or power-
up status. See table on next page.
The SN400 uses a red/green bi-color LED indicator to communicate the status of the sensor
node. To save battery power, the SN400 sensor node will briefly illuminate the LED. To
query the paired status of the SN400 without interrupting operation, a “quick” press of the
pairing button (P) will indicate the network pairing status (to gateway) using the LED
indicator. Long pressing the pairing button will cause the SN400 to clear its paired status to
a gateway, and it will start broadcasting to initiate a new connection to a nearby gateway.
Pushing reset does not clear the pairing memory or status. Pushing reset will cause the
SN400 to initialize to a power on state. The tables below cover detailed operation of the
pairing (P) and reset (R) buttons, as well as the LED indication.
Copyright © 2021 R9 Technology Inc. All rights reserved. 10
SN400 LED indication
-
power on
and
reset button
quick
press
Color
Blink
Count
Description
Red/Green
f
ast 6
The SN400 LED
will
illuminate
with a quick flicker
of both red and green colors on the LED. The
SN400 sensor node is initialized, but the gateway
pairing information is not erased. A small
screwdriver will aid in pushing the tiny button.
SN400 LED indication
-
pairing button
QUICK
press
Color
Blink
Count
Description
Red
quick 3
Indicates SN400 is on, and
IS NOT
paired
to a
gateway sensor network. The SN400 will
continuously broadcast to try and locate a
gateway to pair to. A gateway will not pair to a
node unless it is provisioned to do so in the
online portal.
Green
quick 3
Indicates SN400 is on, and
IS
paired
to a gateway
sensor network, as provisioned in the online
portal. Note that “paired” indicates the node
pairing memory is set with gateway information.
“paired” does not indicate the node is currently
communicating with a gateway (communication
happens infrequently based on sample interval,
typically 15 minutes).
SN
400 LED indication
-
pairing button LONG press
Color
Blink
Count
Description
Red
/Green
f
ast 6
Erase the gateway pairing memory. Depress the
pairing button for a count of five seconds and
then release. The LED will quickly flash
red/green six times to indicate that the gateway
pairing information has been erased. The SN400
will begin broadcasting to find a nearby gateway
to pair to. A small screwdriver will aid in pushing
the tiny button.
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