2GIG DW20R 345 Install Guide
Copyright © 2015 Nortek Security & Control LLC 1
RECESSED DOOR CONTACT
The 2GIG Recessed Door Contact (2GIG‐DW20R‐345) is the industry’s
most flexible supervised door contact. It communicates with the 2GIG
Control Panel using the 345 MHz wireless frequency. It also allows a
multitude of applications while hiding the transmitter within a door or
window frame. It is powered by a replaceable lithium battery, which
should last five (5) years under normal usage.
Figure 1 Recessed Door Contact
Verify that the package includes the following:
• 1—Recessed Door Contact
• 2—Plastic Door Contact Covers
• 2—Plastic Two‐Hole Screw Mount Contact Covers
• 2—Phillips Head Screws
• 2—Plastic Magnet Caps
• 1—Rare Earth Magnet
• 1—Lithium Battery
Before mounting the door contact to the desired location, test the
sensor to verify that it can establish good radio frequency (RF)
communications with the control panel.
NOTE: To learn how to program a wireless sensor into the Control
Panel and for testing information, see the Control Panel’s
Installation & Programming Guide.
• Mount Sensors within 100 ft (30 m) of the Control Panel.
Although the transmitter may have a range of 450 ft (137.2 m) in
open/unobstructed situations, the environment at the installation
site can have a significant effect on transmitter range.
• Install the Recessed Sensor in the Door or Door Frame. It is
important to select the proper placement of the recessed sensor/
transmitter and magnet. The sensor comes with two different
tops, however, the screw mount is recommended for securing the
sensor to a door frame. The magnet does not have a second top
with a flange to screw it into place so you must be extremely
careful to ensure that the magnet is tightly in place upon
• Use Screw Mount to Secure the Sensor to a Door Frame. The
magnet does not have a second top with a flange to screw it into
place so you must be extremely careful to ensure that the magnet
is tightly in place upon installation.
The door contact can be mounted in either the door jamb or door
frame. The best practice is to mount it in the door frame.
Figure 2 Recessed Door Contact—Door Frame
Mounting the Door Contact
To mount the door contact:
1 On the door frame, follow these steps:
1a Use a pencil to mark the location for the sensor and magnet.
1b Drill two (2) holes directly across from each other.
NOTE: It is important to ensure these holes are properly aligned
(see Figure 2 Recessed Door Contact—Door Frame).
2 Using an 11/16" drill bit, follow these steps:
2a Slowly drill the first hole for the sensor into the door or frame.
NOTE: Take care to slowly route the hole to ensure the snuggest
possible fit. The sensor diameter is specifically designed to be
slightly larger than 11/16".
2b Use the flanged cap with the included screws to mount the
recessed sensor into the door or window frame.
2c Drill a matching hole for the magnet, directly opposite from
the transmitter, also using an 11/16" drill bit.
A Door/Window Contact Housing
B Contact Cover
C Screw Mount Contact Cover
A Door Jamb
C Recessed Door Contact
2 Copyright © 2015 Nortek Security & Control LLC
Recessed Door Contact | Installation Instructions
Inserting and Replacing the Batteries
To insert or replace the batteries:
1 Unwrap the door contact.
2 Use a small flat‐head screw driver to push the clips on the side
of the sensor casing in, Then remove the sensor cap.
To reach the battery, you must remove the circuit board from
the casing. Before removing the board, it is important to
observe how the board fits into the grooved channel on the
inside of the sensor cap. When replacing the board, ensure the
circuit board fits back into the channel for a proper fit.
Figure 3 Battery Compartment and Polarity
3 Gently remove the circuit board from the casing. Notice how
the battery compartment is built into the end of the circuit
4 Remove the battery from the compartment.
IMPORTANT: Always dispose and/or recycle used batteries in
accordance with the hazardous waste recovery and
recycling regulations for your location. Your city, state, or
country may also require you to comply with additional
handling, recycling, and disposal requirements.
5 Insert the new or replacement battery into the compartment.
Always match the plus (+) sign on the battery with the flat side
of the compartment and the minus (‐) sign on the battery with
the spring side.
6 Reinsert the circuit board to fit snugly inside casing and then
replace the sensor cap, taking care to ensure the circuit board
fits properly in the cap’s grooved channel.
WARNING: Failure to follow these warnings and instructions
can lead to heat generation, rupture, leakage, explosion,
fire, or other injury, or damage. Do not insert the battery
into the compartment in the wrong direction. Always
replace the battery with the same or equivalent type (see
Specifications). Never recharge or disassemble the battery.
Never place the battery in fire or water. Always keep
batteries away from small children. If batteries are
swallowed, promptly see a doctor.
Wireless Signal Range 450 ft (137.2 m), open air, with Wireless
Code Outputs Alarm; Alarm Restore; Supervisory; Low
Transmitter Frequency 345.00 MHz (crystal controlled)
Unique ID Codes Over one (1) million different code
Supervisory Interval 70 minutes
Magnet Dimensions (HxD) 0.5 x 0.75 in (1.27 x 1.9 cm) typical
Magnet Type Rare Earth
Sensor Dimensions (HxD) 2.57 x 0.75 in (6.53 x 1.9 cm)
Weight (including battery and
1.25 oz (35.4 g)
Housing Material ABS Plastic
Color White or Brown
Operating Temperature Limits 32° to 120° F (0° to 49° C)
Relative Humidity 5‐95% Non‐Condensing
Battery (installed with pull tab) One (1) 3V CR‐2 or equivalent Lithium battery
Certification Anatel, ETL, FCC, IC, and NOM
This device complies with Part 15 of the FCC's Rules. Operation is
subject to the following two conditions:
1 This device may not cause harmful interference, and
2 This device must accept any interference received, including
interference that may cause undesired operation.
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation.
This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
• Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for
This product complies with FCC radiation exposure limits for an
uncontrolled environment. Avoid operating this product at a
distance less than 20 cm from the user.
B Door/Window Contact Housing
C Battery Case/PCB
D Screw Mount Top
Copyright © 2015 Nortek Security & Control LLC 3
CAUTION: Any changed or modifications not expressly approved
by the party responsible for compliance could void the user's
authority to operate this equipment.
Industry Canada (IC) Compliance
This device complies with Industry Canada license‐exempt RSS
standard(s). Operation is subject to the following two conditions: (1)
this device may not cause interference, and (2) this device must accept
any interference, including interference that may cause undesired
operation of the device.
Repairs to certified equipment should be made by an authorized
Canadian maintenance facility designated by the supplier. Any repairs
or alterations made by the user to this equipment, or equipment
malfunctions, may give the telecommunications company cause to
request the user to disconnect the equipment.
Users should ensure for their own protection that the electrical
ground connections of the power utility, telephone lines and internal
metallic water pipe system, if present, are connected together. This
precaution may be particularly important in rural areas.
Users should not attempt to make such connections themselves, but
should contact the appropriate electric inspection authority, or
electrician, as appropriate.
This Nortek Security & Control LLC product is warranted against
defects in material and workmanship for two (2) years. This warranty
extends only to wholesale customers who buy direct from Nortek
Security & Control LLC or through Nortek Security & Control LLC’s
normal distribution channels. Nortek Security & Control LLC does not
warrant this product to consumers. Consumers should inquire from
their selling dealer as to the nature of the dealer’s warranty, if any.
There are no obligations or liabilities on the part of Nortek Security &
Control LLC for consequential damages arising out of or in connection
with use or performance of this product or other indirect damages
with respect to loss of property, revenue, or profit, or cost of removal,
installation, or reinstallation. All implied warranties for functionality,
are valid only until the warranty expires. This Nortek Security &
Control LLC Warranty is in lieu of all other warranties expressed or
1950 Camino Vida Roble, Suite 150
Carlsbad, CA 92008 USA
For technical support in the USA and Canada:
Visit web site for technical support hours of operation
For technical support outside of the USA and Canada:
Contact your regional distributor
Visit dealer.2gig.com for a list of distributors in your region
77‐000029‐001 Rev. C
A Nortek Company