PMMN4024 PMMN4024A PMMN4025 PMMN4025A PMMN4040 PMMN4040A Speaker Microphone Replacement for Motorola MotoTRBO Two Way Radio. ^^ 3.5 mm audio jack allows communication with optional earpieces. Specifically designed for outdoor environments. ^^ Handheld Speaker Mic, easy to talk and listen without lifting your radio/transceiver. ^^ Push-To-Talk button and microphone are located on the accessory for quick and easy use. ^^ All products are replacement part with our own brand Aimtobest. The mention of other brand name or specific model is solely intended to illustrate compatibility.