Why even think about taking a risk when it comes to your reptiles? These are the best Thermostats money can buy. If multi-million dollar labratories trust these you can too! Don't trust your animals to some cheap thermostat with a herp logo on it! They work with both hot and cold so not only can you use them with your heat tape but you can use them for brumation as well!! You can even set the temp and put the probe in your fridge to brumate your snakes in an old fridge! Another great use is to use one on your heat tape to shut it down if it gets too hot! Many snakes have been killed by heat tape that wouldn't turn off, this will keep that from happening! Here are the stats on these Thermostats:

The Ranco ETC is a microprocessor based electronic temperature controller designed to provide on/off control of heating and cooling. The ETC is equiped with a Liquid Crystal Display(LCD) that
provides a constant readout of the sensed temperature, and a touch keypad that allows
the user to easily and accurately select the set point temperature, differential set point, and heating or cooling mode of operation. The unit can be operated on either line voltage, 120/208/240VAC. With its wide temperature setpoint range and selectable heating or cooling modes, the ETC can be used for a wide variety of applications such as heat tape,
A/C, Safty shut off, Education, Aquariums, Hydroponics, Pools and more..

• Large and easy to read LCD


• Remote Sensor of up to 400ft away


• SPDT Output Relay


• Wide Range: -30 to 220°:F


• User selctable Fahrenheit/Celcius scales


• Lockout Switch to prevent tampering by unauthorized personnel


• Simple 4-step keypad programming

SPECIFICATIONS:

SETPOINT TEMPERATURE RANGE | -30°:F to 220°:F DIFFERENTIAL ADJUSTMENT | 1°:F to 30°:F
INPUT VOLTAGE | 120 or 208/240 VAC, 50/60Hz
SENSOR | Thermistor, 2" long x 0.25" diameter with 8ft. cable
DISPLAY | LCD
ENCLOSURE | NEMA 1, Plastic
ENVIRONMENT | -20 to 140°F; RH 0-95%
DIMENSIONS | 175 x 41 x 23mm (7.9 x 1.8 x 1")

Now for the price:
$58 Plus shipping if purchase them from Grainger. You will have to sign up for an account but it's fairly easy to do. These are Grainger part #3ZP77.