Spring Link2 User manual

Quick Start Guide
Operating Warnings
The Link2 Receiver is supplied with the mains wire fitted. All
other connections require wiring. Fit your Link2 Receiver unit
carefully in accordance with the diagrams and following these
instructions*.
Always disconnect the Link2 Receiver from power before
wiring. The pairing button is situated on the controller’s PCB.
Once paired always replace the front cover and tighten
screws.
Receiver - Specification
Supply Voltage DC
Supply Voltage AC
Power
Fuse Rating DC
Fuse Rating AC
Max Load Standard Current
Max Load High Current
Enclosure Material
Water Resistance
Dimensions
Working Temperature
Link2 - Range
6-36 VDC
100-230VAC
1W
1A (on red wire)
3A (in plug)
Loads 1, 2, 3 & 4 - 10A
Loads 1 & 2 - 20A, 3 & 4 - 10A
ABS
IP65
160 x 118 x 76 (mm)
0 to 40 Deg C
300m (approx**)
Value
DISCLAIMER
THE MANUFACTURER RESERVES THE RIGHT TO MAKE CHANGES TO ANY PRODUCT HEREIN TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN. THE MANUFACTURER DOES NOT ASSUME ANY LIABILITY ARISING
OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN.
* Unit must be installed by a competent electrician or electrical engineer. Failure to comply
with these instructions could invalidate your warranty.
** All range distances are line of sight and approximate. Working distances may vary
depending on obstacles, environmental conditions and individual installation.
For more information and videos on how to use Spring controllers please visit: www.springltd.co/videos
Link 2 is a registered trademark of Spring (Europe) Ltd. Copyright © 2021 Spring (Europe) Ltd. All rights reserved.
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RECEIVER

Wiring
The Link2 Receiver can be powered by 6-36VDC or 100-230VAC.
It can switch mains powered loads and DC (battery or PSU)
powered loads. Follow the diagrams and instructions below for
wiring the Link2 Receiver. Note: unit must be installed by a
competent electrician or electrical engineer. Failure to comply
with these instructions could invalidate your warranty.
Always disconnect power before opening unit.
When wiring the loads to the Link2 Receiver unit always disconnect
the unit and loads from the power. After wiring tighten glands and
always replace protective safety cover before powering unit.
The enclosure cover has to be open to pair with the transmitter
option. Once paired replace enclosure cover as soon as possible.
Wiring
The Link2 Receiver can be powered by DC or AC. Follow these
instructions to wire the unit. Open the enclosure using the four
corner screws and remove the protective safety cover using the
two screws. Push the wires through the bottom glands and wire
accordingly, following these instructions:
100-230VAC
Connect the blue wire to the
neutral terminal, yellow/ green
to the earth terminal, and
brown to the live terminal.
Connect the red wire to the
positive terminal and the black
wire to the negative terminal.
Do not over tighten the screws.
WARNING: High Voltage
Isolate from mains
WARNING: High Voltage
Isolate from mains
6-36VDC
or
NO COM NC NO COM NC NO COM NC NO COM NC
Relay 1 Relay 2 Relay 3 Relay 4
WARNING: High Voltage
Isolate from mains
Pairing LED
Pairing Button
LED 1 LED 2 LED 3 LED 4
Protective Safety Cover
WARNING:
6V - 36V DC
Pairing Reset
Switch

Manual Override
Pairing
It is possible to manually override the relay current settings on the
Link2 Receiver.
If one or more of the relays are in operation (LEDs are illuminated
on the receiver unit) press and hold the receiver pairing button.
This will turn off all relays and LEDs.
If none of the relays are in operation (LEDs are not illuminated on
the receiver unit) press and hold the receiver pairing button to
turn on all the relays (and LEDs). Press and hold again to turn off
all the relays (and LEDS).
There are four different transmitter options for the Link2
Receiver. Read all instructions and safety warnings before
use. Up to five transmitters can be paired with the receiver.
Rechargeable Fob Non Rechargeable Fob
Pi Hat Control Screw Terminal Control
1 2
3 4
Transmitters Quick Start Guide
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TRANSMITTERS
The enclosure cover has to be open to pair with the transmitter.
Extra care should be taken when the unit is powered whilst the
enclosure is open. Once paired replace enclosure cover as soon
as possible.
The Link 2 receiver can be paired with up to five transmitters. To
clear all pairings use the Pairing Reset Switch. Switch ‘1’ to the on
position for at least five seconds (the switch must then be returned
to the off position). When more than five transmitters are paired
without clearing, any new pairing will replace the oldest.
For pairing, refer to the transmitter pages of this manual. Always
follow the safety instructions.
Operation
To turn on the unit connect to power. Disconnect the power to turn
the unit off. Only power the unit when all wiring is complete and the
protective safety cover has been replaced.
When the unit has power the Pairing LED will flash slowly. It will then
flash quickly to show bonding state with a transmitter and flash
slowly again once paired.
WARNING: High Voltage
Isolate from mains
WARNING:
6V to 36V DC

Mains Powered Loads Wiring
Normally open wiring Normally closed wiring
LOAD 4
10 Amps Max
LOAD 2
20 Amps Max
LOAD 3
10 Amps Max
LOAD 1
20 Amps Max
The maximum load currents for the Link2 High Current are:
Max Load Currents
Make sure correct fuses are fitted inline. Failure to
do so may result in damage to the unit.
Fuse
Load
NO NCCOM
Terminal
Block
Battery
/ PSU
DC Powered Loads Wiring
Each load can be wired to either NO (normally open) or NC
(normally closed). Fuses should always be fitted to protect
the unit and the wiring. Check the fuse rating in relation to
the load current.
Note: All max currents shown are for resistive loads only.
Fuse
Load
NO NCCOM
Terminal
Block
Battery
/ PSU
Normally open wiring Normally closed wiring
LOAD 4
10 Amps Max
LOAD 2
10 Amps Max
LOAD 3
10 Amps Max
LOAD 1
10 Amps Max
The maximum load currents for the Link2 Standard Current are:
There are two versions of the Link2 Receiver. Check unit version
before connecting any loads. Failure to follow maximum load
currents could result in damage to the unit.
Load
L
N
E
NO NCCOM
Terminal
Block
Live
Neutral
Earth
Fuse
Load
L
N
E
NO NCCOM
Terminal
Block
Live
Neutral
Earth
Fuse

or
To pair a fob and the Link2 Receiver, press and hold two
opposite buttons on the fob. If the fob is charged and
working, the LED segments will light up and circle.
The receiver pairing button will flash faster. Press the
receiver pairing button.
If pairing is successful, the LED segments will stop
circling on the fob and the pairing LED will flash slowly.
To switch a load, press the button on the fob once. To
indicate that the function has worked, the fob LED strip
will either fully illuminate or partially illuminate depending
on which way the load has been wired (NO or NC).
Pairing
Fob Operation
Fob Charging
Non Rechargeable Fob
Rechargeable Fob
Load 1 Load 2 Load 3 Load 4
Supply Voltage Micro USB Port
Supply Voltage Coin Cell
Water Resistance - Fob
Dimensions
5 VDC (300mA)
3 VDC (replace with CR2450)
IP54 (water resistant)
75 x 16 (mm)
Fob - Specification Value
Rechargeable and
Non Rechargeable Fobs
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TRANSMITTERS
Charging LED
Micro USB Cable
LED Strip
Fob Buttons
The fob will indicate when it needs charging by
lighting two LEDs.To charge, plug in a micro USB
charger to the charging connector. The charging
LED is red when charging and green when charged.
The charging LED will flash when the fob battery is
getting low. When this happens, replace battery with
a CR2450 by following the instructions below.
The fob battery can be overridden if needed. To do
this, plug a micro USB charger into the charging
port. This will only power the fob whilst plugged in
and will not recharge the battery.

Pi Hat Control
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TRANSMITTERS
Supply Voltage Raspberry Pi®
Dimensions (Excl antenna)
5 VDC (Raspberry Pi®)
64 x 30 (mm)
Fob - Specification Value
Assembly
Pairing
Raspberry Pi®
Expansion Header
Pairing Button
Pairing LED
LED 1
Antenna
Mounting Holes
To fit the Pi Hat board to the
Raspberry Pi®:
1. The Pi Hat board is compatitble
with all Raspberry Pi® models.
The example shown is a
Raspberry Pi 3 Model B V1.2
2. Attach the spacers to the
Raspberry Pi®
3. Attach the expansion header
to the Pi Hat board and place the
Pi Hat board onto the Raspberry
Pi® and tighten spacer nuts.
12
3
Always disconnect power before handling unit.
Do not expose unit to water, moisture or heat.
To pair the Pi Hat and the Link2 Receiver, press and hold the pairing
button on the Pi Hat. Both the Pi Hat pairing LED and receiver pairing
LED will flash faster to show bonding
Press the receiver pairing button. If pairing is successful, both pairing
LEDs will flash slowly again.
Set GPIO high to turn on the relay on the receiver and low to turn off
the relay.
Pairing LED
LED 1
The pairing LED will flash slowly
constantly to show alive state,
then fast to show bonding state.
LED 1 will flash once on a
command sent, then again if
reply is received. If it only flashes
once when GPIO level is changed,
the command has sent, but no
confirmation has been received.
For demo code visit: https://github.com/springltd/link2_pi_demo01

Embedded Control Unit
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TRANSMITTERS
Supply Voltage DC
Supply Voltage AC
Dimensions (Excl antenna)
6-36 VDC
100-230VAC
80 x 80 (mm)
Fob - Specification Value
Always disconnect power before handling unit.
Do not expose unit to water, moisture or heat.
Pairing LED
LED 2, 3,
4&5
The pairing LED will flash slowly constantly to show
alive state, then fast to show bonding state.
The corresponding LED will flash once when the state
of the input changes (edge or level) and then again
when confirmation is received from the Link2 Receiver.
WARNING: High Voltage
Isolate from mains
WARNING:
6V to 36V DC
1234
Pairing Button
Antenna
6V-36V DC
Terminal
LED 2, 3, 4 & 5
Pairing LED
100-230V AC
Mains Terminal
Switch Terminals
Edge / Level
Dip Switch
Wiring
The Embedded Control can be powered by DC or AC. Follow
these instructions to wire the unit.
Connect the red wire to the positive terminal and
the black wire to the negative terminal. Do not over
tighten the screws.
6-36VDC
WARNING:
6V to 36V DC
WARNING:
6V to 36V DC
100-230VAC
Connect the blue wire to the neutral terminal,
yellow/ green to the earth terminal, and
brown to the live terminal.
WARNING: High Voltage
Isolate from mains
WARNING: High Voltage
Isolate from mains
or
Wire the switches either way round into the switch terminals
and tighten the screws.
Pairing
To pair the Embedded Unit and the Link2 Receiver, press and hold
the pairing button on the Embedded Unit. Both the Embedded pairing
LED and receiver pairing LED will flash faster to show bonding.
Press the receiver pairing button. If pairing is successful, both pairing
LEDs will flash slowly again.
Set Up
The state of the switches can be changed between edge and
level using the dip switch. The switches are connected to the
corresponding number on the dip switch. In the up position
the state is edge and in the down position the state is level.