The moisture meter can quickly measure the moisture content of the grain. 1. Material premium: Caregiver pager is made of the highest quality ABS material and silicone, wear-resistant, fire-resistant, environmentally friendly and durable. 2. 38 melodies: wireless call button ma 38 ringtones to choose from and 4-stage volume control, the sound is clear and loud, with LED light. 3. Power Memory Function: Restart the doorbell unchanged, after an unexpected power outage, the alarm pager had the same setting when restarted. 4. High sensitivity: barrier-free reception distance is 350m, praktyczna inner distance more than 50m, high sensitivity, stable and reliable. 5. Wide Application: the alert button can be used as an emergency calling device, children's calling device, wake-up device, nursing calling device and so on. Specification: Item Type: Pager Caregiver Material: ABS and silicone Application: can be used as elderly calling device, children's calling device, wake-up device, nursing calling device; Melody: 38 melodies (4 levels of volume control) Transmission distance: 350M/382,76yd (without barriers), 50M/50,68yd (indoor) Transmission frequency: 433 MHz Pager size: Ok. 60x60x14mm/2,36x2,36x0,55 inch Receiver Size: Ok. 72x72x17mm/2,83x2,83x0,67 inch Standard Receiver Plug: AC100-240V Transmitter battery type: dry battery L1028 23A12V 200mAhx1 (built-in) List of packages: 1 x Caregiver Pager 1 x Receiver 1 x strap; Note: 1. Do not place the product in a corrosive, humid and high temperature environment! 2. Please power according to the voltage used. Other voltages can cause fire and damage to the product.