The RM-325 2-Channel Intercom User Station (A4F) from Telex is a programmable 2-channel intercom user station designed to be used with an RTS-TW intercom system. The compact station can be placed on a desktop or mounted in an equipment rack with optional hardware. Each channel has its own talk button and indicator light. The buttons have dual-action momentary/latching operation to provide versatile operation. Internal DIP switches let you independently configure the talk buttons. The rear panel Aux connector also has talk switch inputs for each channel, ideal for use with a footswitch.

The station has an A4F connector that supports a dynamic microphone headset. The rear Aux connector can be used to remotely turn the mic on and off. A carbon-mic headset jack is also provided, which has an internal circuit that is activated when the carbon mic is on. An internal jumper lets you configure the carbon mic input for use as an on/off switch input. Mic audio is available as an unswitched, unbalanced output at the Aux connector.

The RM-325 has separate listen volume controls for each channel, plus a volume control for the 1/4" program input. Default operation sends channels 1 and 2 to the left and right headphones, respectively, with the program input being sent to both. You can use the internal jumpers to combined the signals for mono listening, or assign the program audio to left/right channels when using a stereo headset.

Other features of the user station include sidetone controls for each intercom channel to adjust the level of the operator's own voice in the headphones. A call button and indicator lets the unit send and receive call signals. Talk-off signals can be sent and received to kill microphones. The RM-325 is set to receive power from channel 1 of the intercom by default, though it can also be configured to receive power from channel 2 or from a local 24VDC power source attached to the Aux connector.

For RTS-TW Intercom Systems    Talk Buttons with Indicators    Call Button with Indicator    Separate Listen Volume Controls    Sidetone Controls    A4F Headset Jack    Talk-off (Mic Kill) Signaling    XLR Input and Loop Connectors    Program and Aux Inputs    Line/Local Power Options

Works with RTS-TW intercom systems

The compact design lets you place the station on a desktop or mount it in an equipment rack with optional hardware

Each channel has its own talk button and indicator light. The buttons have dual-action momentary/latching operation to provide versatile operation. Internal DIP switches let you independently configure the talk buttons

The rear panel Aux connector has talk switch inputs for each channel, ideal for use with a footswitch

The station has an A4F connector that supports a dynamic microphone headset. The rear Aux connector can be used to remotely turn the mic on and off

A carbon-mic headset jack is provided, which has an internal circuit that is activated when the carbon mic is on. An internal jumper lets you configure the input for use as an on/off switch input

Mic audio is available as an unswitched, unbalanced output at the Aux connector

Separate listen volume controls are provided for each channel, plus a volume control for the 1/4" program input. Default operation sends channels 1 and 2 to the left and right headphones, respectively, with the program input being sent to both. You can use the internal jumpers to combined the signals for mono listening, or assign the program audio to left/right channels when using a stereo headset

Sidetone controls for each intercom channel let an operator adjust the level of his/her own voice in the headphones

A call button and indicator lets the unit send and receive call signals. An internal switch lets you disable the call send function

Talk-off signals can be sent and received to kill microphones. Send and receive functionality can be independently enabled and disabled via internal switches

Program audio can be input via the 1/4" program jack, or the multi-pin Aux connector

The RM-325 is set to receive power from channel 1 of the intercom by default, though it can also be configured to receive power from channel 2 or from a local 24VDC power source attached to the Aux connector

Related Questions and Answers

Q: 1. Is this compatible with the original alpha a5000 camera? I see mention of the 5100 only. Thanks

A: Yes, the Sony RM-SPR1 Remote Commander for Alpha a5100 Mirrorless Digital Camera, B&H # SORMSPR1, would be compatible for use with the Sony Alpha a5000 Mirrorless Digital Camera.

Q: 2. Hello, how does this remote trigger work in BULB mode and at longer exposure times over 30 seconds? Does it have to keep pressed or how? Thank you for answer.

A: Hi , BULB mode you would have to keep the finger preset unless if you can program the camera

Q: 3. Will the RM-SPR1 work with the new a7lll? Thank you.

A: Hello. The Sony RM-SPR1 is compatible with the Sony a7 III.

Q: 4. Does this remote have the bulb lock function?

A: I'm a novice...but as I understand the bulb lock feature, this remote does not have this option.

Q: 5. Does the button on this device function with half press for auto focus?

A: Yes, it will.

Q: 6. Will this wkrk with a7 R II?

A: Yes it is compatible with the a7rii.

Q: 7. Does this work with the A7Riv?

A: The Sony RM-SPR1 Remote Commander is compatible with the Sony Alpha A7R IV camera.

Q: 8. Will it work with a900?

A: Unfortunately this remote is not compatible with the a900. We sell this Vello remote that is compatible with the A900. https://www.bhphotovideo.com/c/product/765688-REG/Vello_RS_S1II_RS_S1II_Wired_Remote_Switch.html

Q: 9. Will this work with a Sony DSLR-A300 camera?

A: Unfortunately no but this Vello remote is compatible with the Sony A300: https://bhpho.to/3blpmY4

Q: 10. Will this work on A9ii and A7R4?

A: It is compatible with the ILCE9M2 and ILCE7RM4.