The RCM switching receiver is part of a powerful RF system solution from EnOcean for
operation and control applications. Because the RF transmitters are self-powered (no
batteries), maintenance-free RF systems can be implemented.
The RCM switching receiver operates together with the following further EnOcean components:
PTM (batteryless radio switches), STM 250 (batteryless radio window contact), CTM (remote
control) and TCM (bi-directional IT interface)
1.3 Features Overview
Power Supply
: ......................................................................................120 VAC, 60 Hz
Power Dissipation
: ................................................................................ 1300mW max.
Relay Output
: ..................................................maximum load 1100VA resistive (cos
φ
=1)
200W tungsten (incandescent lamp), 140W ballast with cos
φ
=0.4 – 0.6 (fluorescent lamp)
Radio Frequency
: ................................................... 868.3 MHz (stabilized by crystal PLL)
Channel Bandwidth / Sensitivity
: ..................................................... 280 kHz / -95 dBm
Antenna
:...................................................................................... internal whip antenna
Control Inputs
: ....... 2 pushbuttons LRN (set receiver into learning mode) and CLR (clear all)
Learning Mode Indication
: ............................ acoustic feedback (switching noise of relay)
Number of RF transmitters learnable
: .........up to 30 switches or up to 2 magnet contacts
Note: either PTMs or either STM250s can be learned, not mixed (for priority reasons)
Figure 2: RCM 255 housing (without wiring)
©EnOcean GmbH, A. Anders
Page 5 of 18
RCM 255 User Manual V1.12
