| Name | Technology | Strengths | Weaknesses |
|---|---|---|---|
| RF Transceiver module RR501, TWM751, etc | Plugs in wall, receives RF signals from many devices, sends X10 signals through wall wiring. Has one switched outlet. | Can cross circuits (service legs, UPS's, surge supressors), long range, can be controlled by many X10 RF devices (like the FireCracker) and remote controls. | Can onlu control one house code, some can only control 8 unit codes instead of 16. |
| Lamp modules | Plugs in wall, receives signals through wall wiring. | Can be dimmed, responds to ALL LIGHTS ON/OFF signals. | Only works with 120V incandescent lighting. |
| Appliance modules | Plugs in wall, receives signals through wall wiring. | Can control heavier loads with some inductance. | Still has some current leakage, so some things with capacitance like strobes will not shut completely off. |
| "Socket Rocket" screw-in light module | Screws into light socket, bulb screws into it, receives signals through wall wiring. | No wiring, some have dusk/dawn sensor. | May extend past shade. |
| PUM01 Universal Module | Contact closure and beeper. Trips a device connected to the dry contact; rated at 24V DC. Optionally emits a notification beep. | Allows you to control any device (lights, pumps, alarm systems) | Limited to 24V, so another relay is needed for 120V control. |