This part is a kind of semiconductor called NDR433.92.

Function of this product has One-port SAW Resonator.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

One-port SAW Resonator For wireless Remote Controller 2002 1.Package Dimension(F-11 SMD) Unit:mm NO. 1 2 3 4 Function Output/Input GND GND Input/Output Unit:mm http://www.net/ 2. Marking NDR433.92 2-1.Color: Black or Blue 2-2.Center Frequency(MHz):433.92 3.Performance 3-1.Maximum Rating DC Voltage VDC AC Voltage VPP Operation Temperature Storage Temperature RF Power Dissipation 10V 10V(50Hz/60Hz) -40 °C to +85 °C -40 °C to +85 °C 0 dBm datasheet pdf - http://www.net/ One-port SAW Resonator For wireless Remote Controller 2002 3-2Electronic Characteristics Characteristic Absolute Frequency Center Frequency(+25℃ ) Sym Minimum fc ∆fc 433.845 Typical Maximum 433.995 Unit s MHz kHz Tolerance from 433.92 MHz Insertion Loss ±75 1.5 2.0 dB Qualit [ ... ]

NDR433.92 PDF Datasheet Download