SF Series. 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) Typical Applications

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Dale Johnson
5 years ago
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Long Range Wireless Applications 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) The switch followers are a two way system designed to provide a quick and cost

Designed to work in pairs, the output realy at the receive end of one unit will follow the input at the transmit end of the other unit.

This will activate the corresponding relay at the originating (TRANSMIT) end confirming the switch change was carried out at the other unit.

1 Long Range Wireless Applications 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) The switch followers are a two way system designed to provide a quick and cost effective solution for a variety of wireless switching applications. Each unit has four inputs connected to a transmitter and 4 outputs connected to a receiver. Designed to work in pairs, the output realy at the receive end of one unit will follow the input at the transmit end of the other unit. An optional loopback mode can be set for each channel separately. This will activate the corresponding relay at the originating (TRANSMIT) end confirming the switch change was carried out at the other unit. The inputs on the other unit are ignored for those channels set in the loopback mode. The inputs are opto-isolated and may be operated by an applied voltage that can be supplied by a power source from 5 to 24 Volts AC or DC through a switch contact, relay, sensor, PLC output, etc. Alternatively, instead of automatic switch following operation, the SF900 can operate as a 4-channel wireless relay using a SFT900 2 or 4-button handheld remote control. In this configuration, latched, momentary and toggle mode outputs are available. When a button is pushed on the SFT900-4, a beep will indicate that the proper relay was triggered in the SF900. In this configuration, the SF900 is always in the loopback mode. These products utilize frequency hopping spread spectrum technology and are immune to interference and multipath fading. All inputs and outputs are independently isolated from each other and from the power supply ground. Features 4-Inputs/4 each-10a Relay Outputs Long Range: 1-mile Two-Way Operation Two Input Modes-Dry Contact and/or Voltage Spread Spectrum Technology Isolated Inputs and Outputs Volt DC or AC Operation Optional Handheld Remotes Available Optional NEMA 4X Wall Mount Remote Available Antenna Included FCC Certified Typical Applications Pump Control Motor Control Solenoid Control Lighting Control Access Control PLC Activation HVAC Control Ordering Information Model No. Product Description Range Power Addressability SF900A Switch Follower, Single Unit, 4 Relay 150mW Factory Set SF900A-P Switch Follower, 2-Unit Set Up to 1-Mile 150mW Factory Set SFT900A-n n-button Handheld Remote, n=1, 2 or 4 ½ Mile+ 150mW Factory Set SFT900A-n-NTX n-button Handheld Remote, n=1 or 2 ½ Mile+ 150mW Factory Set SF900B Switch Follower, Single Unit, 4-Relay 250mW Learning SF900B-P Switch Follower, 2-Unit Set 1 Mile+ 250mW Learning SFT900B-n n-button Handheld Remote, n=1, 2 or 4 1 Mile+ 250mW Learning SFT900B-n-NTX n-button Handheld Remote, n=1 or 2 1 Mile+ 250mW Learning Note: A and B units are not compatible. Order all A s or all B s. Tel: (805) Fax (805)

2 Electrical Characteristics Sym Parameter Min Typ Max Unit Operating Voltage Range Volts Operating Current, Receive Mode ma Operating Current, Transmit Mode ma Input Resistance 4.7K Ohms Signal Input Voltage 5 24 Volts AC or Output Relay Contact Ratings at 28VDC 10 Amps f Frequency Range MHz P out Output Power 150/250 mw Z out Antenna Input Impedance 50 Ohms T op Operating Temperature C Package Dimensions RELATED PRODUCTS ANTENNA BULKHEAD EXTENSION CABLE, ANTENNA BULKHEAD EXTENSION CABLE, 6 FT OPTION 14 NEMA ENCLOSURE WITH CABLE GLANDS Tel: (805) Fax (805)

3 Learn Mode Instructions The SF900 learn mode is initiated by pushing the learn button on both units and releasing them. The power LED s on both units will start blinking and a handshaking protocol is initiated. After a few seconds, the power LEDs will stop blinking and stay ON. The data light on each unit will also turn ON indicating successful pairing operation. To pair a SF900 switch follower with a SFT900 hand-held remote unit, push the learn button on the SF900 and the power LED will start blinking. Then push 1, 2, 3, 4 on the SFT900. Two beeps will be heard from the SFT900. After a few seconds of handshaking protocol, the power LED on the SF900 will stop blinking and remain ON and the data LED will light. A beep will be heard from the SFT900. Pairing will be complete. Application Circuit Standard Tel: (805) Fax (805)

4 Mode Configuration Settings Use the internal 4-position DIP switch and the J1 jumper to set configuration modes. SF900 s in use as switch following pair Transmit side unit Receive side unit Loopback Off Loopback Enabled J1: T or L T or L T or L SW1 OFF (default) OFF ON SW2 OFF (default) OFF ON SW3 OFF (default) OFF ON SW4 OFF (default) OFF ON Loopback Mode: When enabled, activates the corresponding relay at the originating (transmit) end confirming the switch change was carried out at the receiving end. When loopback mode is enabled, the corresponding inputs at the receive end are ignored. SF900 Settings when used with SFT900-4 Remote Control Transmitter Switch / Mode Momentary Toggle Latched Output J1 T or L T L SW1 OFF ON ON Relay 1 SW2 OFF ON ON Relay 2 SW3 OFF ON ON Relay 3 SW4 OFF ON ON Relay 4 Momentary: Output is activated for only as long as button is pressed. Toggle: Push on/push off Latched: A latched mode operates with at least one other channel set to latched mode. For example, if channel 1 and 2 are set to latched mode, pushing button 1 on the SFT900-4 will turn relay 1 on the SF900. Pushing button 2 will turn off relay 1 and turn on relay 2. This mode is often used when a separate on and off button is desired. If more than 2 channels are selected for latched mode, only 1 relay can be activated at any given time. Any activated relay will result in the others being turned off. J1 T L Latched Mode When paired with SFT900 transmitters, the J1 Jumper setting must be set to the L position to allow SW1 to select channels for the Latched mode. J1 For any other mode of operation, the J1 jumper should be set in the T position, the factory default configuration Tel: (805) Fax (805)

5 Application Circuit- Loopback Mode Application Circuit- Thermostat to HVAC Tel: (805) Fax (805)

SF C-Series. 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) Typical Applications

SF C-Series. 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) Typical Applications Long Range Wireless Applications 900 MHz Wireless Switch Follower/Remote Control Receiver (with On-Board 10-Amp Relays) The SF900C Series Remote Control/Switch Followers are a twoway system designed to