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If the user requires a channel with key-function, the shortest time in the attached table should be used. The corresponding relay will
stay closed only as long as the transmitter key remains active.

In the case of electromagnetic interference during the switching process (e.g. from inductances), short transmitter
interruptions can occur (which may be perceived as relay bouncing), the timer setting can be increased in steps. These times
can be considered as falling delays, avoiding the undesirable „bouncing“ effect of the relay contacts. Normally, values up to
0.8 s are sufficient.

Higher timer values adjustable up to 60 minutes allow the user to program the connection of any devices for a specific length of time.
Furthermore, a steady connection (continuous ON) can be selected as well. The disconnection (power OFF) can be performed with a
separate signal, i.e. a separate transmitter key.

Toggle function

If the jumper is inserted in the position “toggle“ you may switch on and off the relay with the same transmitter key. Each signal
command puts the relay into the opposite state. To toggle a transmitter key, the corresponding DIP switch has to be in “+” position.

The timer delay set is now considered to be a „dead time“ between the switching processes to avoid “bouncing”. While the
timer is running, no new command is executed. Do not use permanent switching or long timer delays !

Additional wired ON/OFF function

If instead of or in addition to a wireless control, the relay needs to be switched on/off by means of a wired connection, the
corresponding contacts can be used to produce an additional „ON“ or “OFF” command by means of an external push-button
(not included in delivery).

Auxiliary outputs for LED

The 5 contacts (see figure beside) are to connect for example a LED with resistor in order to realise an
indicator of relay status. OC1 through OC4 is a collector output for each channel that switches to GND
while the relay is activated. An example circuit to indicate the status of relay 4 is shown to the right.

Use only with the in10V because of parallel use for relay control!

Antenna

The SHR-12 K4 is equipped with its optimised integral antenna for most current requirements. In
applications that require an enlarged
operating range you may use an external antenna which is connected to the BNC connector. If the BNC connector is used, disconnect
the integrated antenna (refer overview figure).

Housing

The housing of the SHR-12 K4 may be wall mounted without removing the PCB. The fixing lugs are placed under the cover screws.
Open the cable entries using a suitable piercing tool. To avoid damage to electronics, only entries on the screw-terminal side should be
used.

If you are sure that all functions are properly working you may start wiring of the relay contacts. If the relay voltage exceeds 40V,
ensure that the receiver is free of voltage before perform starting wiring.

Terminals

To open the contacts you need to insert a screwdriver into the rectangular hole. Then insert the cable and release the screwdriver. The
cable will self retain. The cross-section of wires to be used shall be between 0.14 and 1.5 mm².

Relay contacts

Connect the wires to devices into the terminals for changeover contacts NO/CC/NC. The 4 relay contacts are indicated symbolically on
the PCB as well. The indication refers to the non activated state of the contacts. So for example if the first contact left hand side is the
normal open contact of relay K1, the next one is the common and the third one is the normal closed contact.

Technical Data

Working frequency:

f1 433,62 MHz; f2 434,22 MHz

Antenna:

Integrated antenna (BNC socket, 50 Ohm)

Outputs:

4 transistor outputs; max. 20mA
4 isolated switch over contacts

Relay switching capacity: 230V AC / 10A, 30V DC / 5 A
Timer tolerance:

+10% / -20%

Supply voltage

12…24 V AC/DC (abs. max. 26V); 230V / 50Hz AC

Current consumption: