Wireless Mini Size + Mouse, ACK-570 Infrared, PS/2, Range: 7M / 23'   Features * Designed for Windows * Wireless input with built-in infrared technology * Built-in pointing device for 8-direction cursor control * 88/89 keys keyboard with embedded numeric keypad and 12 dedicated function keys * Fully function of 104/105 keys Transmitter * Frequency: 38Khz/56Khz * Effective angle: Within 45o * Distance: 7 meters * Use force: Approximately 20g to 200g for pointing device * Power: 3VDC(2) 1.5V AA batteries * Battery: 400 hours with typical usage Receiver * Keyboard interface: IBM AT, PS/2 compatible * Power: 5V DC, 250mA max. connected to host computer * LED indicator: Num Lock, Caps, Scroll Lock, Power LED and Active LED * Sensor: High performance & high EMS immunity Specification * Compatibility: IBM AT, PS/2, DOSV * Key layout: 88/89 keys * Travel distance: 3.0 0.3mm * Travel to peak: 1.0 0.3mm * Peak force: 50 10 gm * Operating temperature: 0 to 40oC * Storage temperature: -10 to 60oC * Operating humidity: 10% to 85% RH * Switch life: 5 million life cycles * Electronic data: Transmitter--3VDC 15mA;  Receiver-5VDC250mA * Dimension : 338(L)x167(W)x28(H) * Weight: 0.72kg * Agency approvals: