Specification Item Type Two-way voice intercom Material ABS Model H8 Battery 3.7V 2000mAh rechargeable lithium battery (built-in) Use widely used in home, office, laboratory, medical treatment environments, etc. Operating temperature -20 to 55 Transmission distance 1,000 m in open area, 20 to 50 m through wall Operating frequency 410M to 490M Package list 2 x two-way voice intercoms, 2 x bases, 2 x USB cable, 1 x user manual.
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