Introduction

Today I have the KeySonic ACK-540RF which is the abbreviated way of saying wireless keyboard and mouse. Small in size and wireless in nature, the 540RF should make for interesting testing.

Specs

Wireless mini-keyboard with built-in touchpad and 2 mouse-analogous function keys. Powerful and reliable radio-frequency transmission at 2.4 GHz. Enjoy free and independent choice of site up to approx. 10m away from the PC when operating this keyboard! Extremely flat construction with built-in hand cushion for non-fatiguing work .Full functionality of a standard layout keyboard due to built- in numeric keypad and 12 function keys.

• Key count: 88–89 (depending on locale)
• Construction: “X-Type” membrane technology
• Expected lifetime: 5 million strokes per key
• Actuation: 3.0 ± 0.3 mm total track
• Pressure point: 70 ± 10 gm
• Transmission frequency: 2.4 GHz
• Device recognition: 256 ID
• Effective distance: 7 m
• Battery type: 4 × AAA 1.5 V
• Temperature: –5 °C up to +50 °C (+23 °F up to +122 °F; operating)